I have a Hauppaugh WinTV Go! tv card...I configured it correctly and tried using tvtime, motv, and xawtv. none of them picked up any channels. the composite works fine, i cant test the s-video because i dont have anything that uses svideo. my roommate has the same card, and has no problems with it. we've been trying to figure out why mine doesnt work, but we cant figure it out. I've reconfigured it several times, i swapped pci slots and tried that out. nothing worked.
I'm running SuSE 9.1 pro 2.6.8.1-nitro6 kernel
Any help would be greatly appreciated.

Is the tuner module loaded?

Your post is pretty confusing. How can the card be configured correctly and not work? How do you know the composite is working if there is no picture? Does your roommate run Windows or Linux? Did the card work with the original SuSE setup, before you installed an experimentally patched kernel?

If you like compiling kernels and stuff, why not compile the latest drivers from linux.bytesex.org. There is also a lot of useful documentation in the source code.

sorry for the vagueness......yes, the tuner module is loaded....i dont know how it can be configured correctly and not work, that is why i am posting it here. the composite gives a picture. my roommate runs gentoo. no, the card did not work with the original setup, so i upgraded to the 2.6.7 kernel, then tried using 2..6.7-ck6, then i upgraded to 2.6.8.1 and it didnt work, so i tried it with the nitro6 patch. i tried the patches from bytesex, but they did not work either. is there anything else you would like to know?

According to the README in the bttv source there is more than one version of the WinTV-GO around. Are the two cards completely identical? If not you could try a swap. Or try a swap anyway to eliminate chances of faulty hardware. My TV card was more fussy about the signal quality than a standard TV but I guess you are using the same antenna as your roommate.

I guess you have checked (1) same kernel modules loaded (2) error messages in output of dmesg (3) similar relevant lines in /etc/modules.conf ?

If you could get hold of a knoppix live cd you could try that also with your card.