Tommti-System has released a patch for ATI users to run the NVIDIA Medusa demo(GT200) on their graphics cards, here is the manual by Tommti-System:

Applying the patch

• download the Medusa demo and install it (click here)
• download the patch on Tommti-System and copy the patcher.exe into Medusa\bin directory
• run patcher.exe - Medusa.exe and MedusaLoading.exe will be patched and backed up
• now you only new a nvcpl.dll file from a nvidia driver and copy the nvcpl.dll into Medusa\bin

Getting the nvcpl.dll

• download an nvidia driver (You can check the 175.80 leaked driver here)
• exctract all files
• open a command promt and go to the extraction directory
• run “expand nvcpl.dl_ nvcpl.dll” from the command line
• now you have a nvcpl.dll in the exctraction directory, copy it to Medusa\bin

However, we countered some bad frames when we ran the demo. Maybe it’s caused by our OS or the patch.

source:Tommti-Systems.de