I have a Hauppauge PVR-350 with the grey remote...
Here is ~/.lircrc which is used for mplayer:
#################################################################################

### MPlayer lirc setup

# Show OSD
begin
	prog = mplayer
	button = menu
	repeat = 0
	config = osd
end

# Pause playback
begin
	prog = mplayer
	button = pause
	repeat = 0
	config = pause
end

# Skip ahead a minute if playing
# If paused, resume playing
begin
	prog = mplayer
	button = play
	repeat = 3
	config = seek +1
end

# Stop playback and exit
begin
	prog = mplayer
	button = stop
	repeat = 0
	config = quit
end

# Seek back 20 seconds
begin
	prog = mplayer
	button = Rewind
	repeat = 3
	config = seek -20
end

# Seek forward 20 seconds
begin
	prog = mplayer
	button = Forward
	repeat = 3
	config = seek +20
end

# Quit
begin
	prog = mplayer
	button = back
	repeat = 0
	config = quit
end

# Seek forward 10 minutes
begin
	prog = mplayer
	button = Next
	repeat = 3
	config = seek +600
end

# Seek backward 10 minutes
begin
	prog = mplayer
	button = Previous
	repeat = 3
	config = seek -600
end

# Toggle full-screen
begin
	prog = mplayer
	button = red
	repeat = 3
	config = vo_fullscreen
end

	begin
		prog   = mplayer
		remote = *
		button = Volume-DOWN
		repeat = 1
		config = volume -1
	end
	begin
		prog   = mplayer
		remote = *
		button = Volume-UP
		repeat = 1
		config = volume 1
	end
#######################################################################################################
Here is ~/.mythtv/lircrc
#######################################################################################################
#begin
#    prog = mythtv
#    button = LEFT
#    config = Esc
#end

begin
    prog = mythtv
    button = Go
# Swap the PiP windows
    config = N  
end

begin
    prog = mythtv
    button = 1
    config = 1  
end

begin
    prog = mythtv
    button = 2
    config = 2  
end

begin
    prog = mythtv
    button = 3
    config = 3  
end

begin
    prog = mythtv
    button = 4
    config = 4  
end

begin
    prog = mythtv
    button = 5
    config = 5  
end

begin
    prog = mythtv
    button = 6
    config = 6  
end

begin
    prog = mythtv
    button = 7
    config = 7  
end

begin
    prog = mythtv
    button = 8
    config = 8  
end

begin
    prog = mythtv
    button = 9
    config = 9  
end

begin
    prog = mythtv
    button = Back-Exit
    config = Esc
end

begin
    prog = mythtv
    button = 0
    config = 0  
end

begin
    prog = mythtv
    button = Menu
    config = M  
end

# Below are keys used with the Hauppauge Grey remote

begin
   prog = mythtv
# This is the Red key
# We'll use it for "Delete"
   button = Red
   config = D  
end

begin
   prog = mythtv
# This is the Green key
# We'll use it for "Information"
   button = Green
   config = I  
end

# Note the "repeat =" strings in the volume and channel.
# This means that if you hold down the key, every nth instance will be
# passed.  This depends on your system, so you may want to increase or
# decrease this and see what happens.  repeat = 1 is probably too
# fast.

begin
  prog = mythtv
# This is the Yellow key
# Use it as a volume key
  button = Volume-DOWN
  repeat = 3
  config = F10  
end

begin
  prog = mythtv
# This is the Blue key
# Use it as a volume key
  button = Volume-UP
  repeat = 3
  config = F11  
end

begin
    prog = mythtv
    button = Channel-UP
    repeat = 3
    config = Up
end
begin
    prog = mythtv
    button = UP
# This is the "up" on the central diamond
    repeat = 3
    config = Up
end

begin
    prog = mythtv
    button = Channel-DOWN
# This is the "down" on the central diamond 
    repeat = 3
    config = Down
end
begin
    prog = mythtv
    button = DOWN
# This is the "down" on the central diamond
    repeat = 3
    config = Down
end
begin
    prog = mythtv
    button = LEFT
# This is the "left" on the central diamond 
    repeat = 3
    config = Left
end

begin
    prog = mythtv
    button = RIGHT
# This is the "right" on the central diamond 
    repeat = 3
    config = Right
end

begin
    prog = mythtv
# Middle button on the diamond
    button = Ok
    config = Return
end

begin
    prog = mythtv
    button = Mute
    config = F9  
end

begin
   prog = mythtv
# Change focus for PiP (to change channel in the other window)
   button = Blank
   config = B  
end

begin
   prog = mythtv
# Toggle PiP on/off
   button = Full
   config = V  
end

begin
    prog = mythtv
    button = Rew
    config = Left  
end

begin
    prog = mythtv
    button = Play
    config = P  
end

begin
    prog = mythtv
    button = FFW
    config = Right  
end

begin
  prog = mythtv
  button = Record
  config = R  
end

begin
   prog = mythtv
# Teletext
   button = Stop
   config = T  
end

begin
    prog = mythtv
    button = pause
    config = P  
end

begin
   prog = mythtv
   button = Replay
# Use for backwards commercial skip
    config = Q  
end

begin
   prog = mythtv
   button = Skip
# Use for forward commercial skip
    config = Z  
end

###################################################################################################
Here is /etc/lircd.conf for my Hauppauge Grey remote that came with a PVR-350
###################################################################################################

# Please make this file available to others
# by sending it to <lirc@bartelmus.de>
#
# this config file was automatically generated
# using lirc-0.7.0(hauppauge) on Tue Nov 30 00:38:32 2004
#
# contributed by
#
# brand: lirc.conf
# model no. of remote control:
# devices being controlled by this remote:
#

begin remote

name grayHauppauge
bits 13
flags RC5
eps 30
aeps 100

one 0 0
zero 0 0
gap 200966
repeat_bit 2

begin codes
Power 0x00000000000017BD
Go 0x0000000000001FBB
TV 0x000000000000179C
Videos 0x0000000000001F98
Music 0x0000000000001799
Pictures 0x0000000000001F9A
Guide 0x000000000000179B
Radio 0x0000000000001F8C
UP 0x0000000000001794
LEFT 0x0000000000001F96
RIGHT 0x0000000000001797
DOWN 0x0000000000001F95
OK 0x00000000000017A5
Back-Exit 0x0000000000001F9F
Menu 0x000000000000178D
Prev-Channel 0x0000000000001F92
Mute 0x000000000000178F
Volume-UP 0x0000000000001F90
Volume-DOWN 0x0000000000001791
Channel-UP 0x0000000000001FA0
Channel-DOWN 0x00000000000017A1
Record 0x0000000000001FB7
Stop 0x00000000000017B6
Rewind 0x0000000000001FB2
Forward 0x00000000000017B4
Play 0x0000000000001FB5
Previous 0x00000000000017A4
Next 0x0000000000001F9E
Pause 0x00000000000017B0
1 0x0000000000001F81
2 0x0000000000001782
3 0x0000000000001F83
4 0x0000000000001784
5 0x0000000000001F85
6 0x0000000000001786
7 0x0000000000001F87
8 0x0000000000001788
9 0x0000000000001F89
0 0x0000000000001780
star 0x0000000000001F8A
hash 0x000000000000178E
red 0x0000000000001F8B
green 0x00000000000017AE
yellow 0x0000000000001FB8
blue 0x00000000000017A9
end codes

end remote