My answer could have been this short: sell the card to a window$ user and buy a Nvidia one!
Ati's drivers are the worst ever! On some post I read about a GeForce 2 having more fps than an 9800!
Anyway, I have a 9700 pro all-in-wonder.
At first: there is still no 64 bit driver support up till today! Plain sucking 32-bit only.
Then the drivers (on the ati website) are officialy only for Xfree 4.3! (sigh)
Only on that I got a working dualhead config, but I got some mtrr errors.
From Suse 9.1 there is Xfree 4.3.99 (But RC 4.4 ore something).
Anyway, when using dual head the second screen is blurred.
For Xorg 6.7: can be made operative with some fiddling. do a google.
Xorg 6.8 No succes reported I believe. Just a no go.
So if you install Suse 9.2 and want 3D support, you have to at least downgrade to xorg 6.7 (from suse ftp).
That's what I did for my laptop.
The tuner can be gotten to work with the GATOS project. http://gatos.sourceforge.net/
Since (read from mythtv doc I believe) the implementation is not completely covering the v4l API it won't work with mythtv anyway.
I'd be happy to read if you succeed, if you try.
I just put my 9700 pro in my server, put in the good old GeForce Ti 4600 and at least drivers work like a charm.
I put in a Medion TV-card from Aldi which has the saa7134 chip. A modprobe saa7134 on Suse 9.2 made it work perfectly.
Currently trying to find a good way to put on Mythtv.
Will try to post if succesfull