hi dxCUDA and welcome :)
It's wasn't really clear from your post so i was wondering: are you aiming to make demos with your Amiga development (since this is primarily a demoscene website and since we love demos, i guess/hope you are :))
Anyway, feel free to use and abuse the forum if you have any coding questions and good luck! It would be cool to see something from you in the future.
Also, this might interest you