Im looking to start my designing and programming of a lightweight physics engine suited for real-time rendering, and one thing Id like to implement is using the GPU:s superior flops compared to the CPU for some calculations. However, I havent been able to find much useful information about this topic anywhere. Lots of ppl/topics mention that its good, but not really how to implement it :). Anyone know of a good information source about this?

You'll find lots of information on this site:
-> http://www.gpgpu.org/

If you have questions - just ask. I've done quite a lot on the gpu in the past months. (including implementing a SPH algorithm on the GPU)

Greetings, Roga

Thanks :)

Ill probably be back to hold you to your promise in the near future :P.
We still have quite some designing/research to do before we start our actual coding though.
Checked gpgpu.org earlier today and found some interesting articles that cleared things up a bit.
Nvidias developer section on their homepage also held some nice information aswell in form of a cloth and a water demo that uses GPU physics, if anyone else is interested in this.

Ah well, back to scanning code samples! :)