For those who are looking for it there is a Wiki describing how to get it working. The Wiki is a bit messy and could use a clean-up, which is one of the reasons why I am bringing this to attention.
To sum it up:
- download the latest NVIDIA Linux driver (32-bit or 64-bit does not matter)
- download the NVIDIA CUDA tool-kit (needs to be 32-bit)
- download the Windows GPU2 client (console version)
- download the CUDA wrapper from the Wiki
- install the driver
- install the tool-kit
- install WINE with your Linux package manager
- create a working directory for the client and copy the client & wrapper into it
- point the way to the CUDA libraries and run the client through WINE ...
Sure, it could be easier, but it is a start. Here is the Wiki:Folding@Home GPU v2.0 Windows Client on Linux Wiki