[mythtv-users] Best Settings For TV-Out?

[TJ]

Hi, I'm new to MythTV and Linux as a whole and need some help 
optimizing the settings for TV-Out. I'm using a Sis-315 Pro 64MB 
graphics card with composite TV-Out as the only port connected. I have 
a 42" Sony HDTV(naturally widescreen) that I'm trying to get this to 
look good on.

My questions are:
What settings in Linux should I change in order to make everything less 
blurry and more visible? Change resolution, font size, or what? If so 
to what?

How to I get it to actually work in widescreen, obviously I can stretch 
it on the TV, but it looks awful. Is this a limit of composite 
connection? What remedies are there?

Should I just get a new video card? Any that would have better hook-ups 
for a HDTV? What are the options?

Thanks in advance!

-TJ