[mythtv-users] Two independent X servers, one running MythTV on ATI Radeon x300 dual-head card

[Gareth Glaccum]

I think that the OP wants seperated X servers, not a spanned system which would be setup as per your answer below. I would think that the TV auto-logs in as a non-proveleged user, uses keyboard 1, whilst the second server uses keyboard 2 and has to be authenticated.
However, you could be correct about the NVidia card being the way to go. 
I don't have my other system up at the mo to double check the commands.