Could you send me a link to this please?

I can't seem to get everything working.
I am typing this on a machine running iDeneb 1.4, but have to boot with -x to get it up and running.
I think the problem is with the graphics
I have a Biostar TA790 with SB700 with AMD X2 7750BE and ATI 4850.
I have found all kinds of different downloads for the ATI, but none of them work. All the solutions I've seen for it do not work with my config. I've also tried upgrading to 10.5.7 with the iDeneb upgrade which is the farthest I've gotten with this machine giving the fact that even booting in -x I could get the correct screen resolution. In 10.5.6 I can't get past 1024X768.
I have tried everything I can think of to try and make this work. What is most frustrating is that I see other people have similar machines running is perfectly.

Thanks