No worries, were here to help! It would be nice if we could get a sticky going detailing the GPU client a bit more, I am pretty much in the dark about it myself.
If the 9800GTX is doing 5292PPD by itself then that is phenomenal, what drivers are you running?
Unfortunately running another GPU client won't help in your situation. CPU clients on the other hand would. You can load up the SMP client found here: http://folding.stanford.edu/English/DownloadWinOther
. On some of my folding machines I run the SMP but on others I do not, this is because the SMP client isn't exactly all that polished, if you don't monitor it a few times a week you will find it has hung and the deadline for the WU is long passed (in my case I typically need to completely remove the software and then reinstall it every few weeks). You get a lot more PPD out of the SMP though.
If you are after a set it and forget it approach I would go with three
instances of the standard client found here: http://folding.stanford.edu/English/Download
(5.04 text-only console). I say three since one of your CPU cores is actually being used for the GPU client. You might be able to run four but I haven't heard anything about how well that works.
Tachyonic Karma: Future decisions traveling backwards in time to smite you now.