There are 4 downloads available from F@H for the gpu client,
http://folding.stanford.edu/English/DownloadWinOtherWindows XP/2003/Vista/7 GPU2 System tray client (installer msi) is the simplest install.
I double clicked the downloaded client, and followed the installion instructions.
After the install, I noticed that a new folder had been created in the program files. There were 5 items in the folder; data ati, data nvidia, LICENSE, nvidia viewer and fah.exe.
In the documents and settings/application folder, everything had been installed, 6 DLL'S, fah.exe shortcut, client, configuration, fahlog, queue, etc.
With the exception of the configuration and fah.exe shortcut, I copied the entire contents from the documents and settings/application folder and pasted it in the Folding@Home program file.
I then copied the original configuration file from the old fah folder in my documents and pasted it into the Folding@Home program file.
I then created a desktop shortcut from the Folding@Home program file, which was renamed to gpu 0 and added the flag, (space)(dash)gpu 0, to the exe line.
I then double clicked the shortcut and it started the first 470GTX card by downloading the new core 15. I then opened the configuration tab and found everything was good, the name and team number were correct.
To ceate multiple gpu clients ....
I stopped the client, copied both folders( documents and settings/application & Folding@Home program file), pasted each beside the original and renamed both fah gpu1.
I created a desktop shortcut from the program files and renamed it fah gpu1. I then added the flag (space)(dash)gpu 1, to the exe line. I then double clicked the shortcut and it started the client, opened the configuration window and changed the machine ID #. I then stopped the client.
I restarted both clients, and they have been running for 6 hours, error free @ roughly 9,000 ppd.
Please be sure to remove the gpu.exe shortcut from the startup folder ... C:\Documents and Settings\user\Start Menu\Programs\Startup