Hi mrpascal, welcome to PGD!

I'm sorry, but I've no experience with Force Feedback myself, but I'm sure that there are a few here that may have worked with it previously. I'd like to ask you to let us know about your progress with it as it's not a topic that has not been covered too much here in the past.

Also, I've edited your post to use our own unique Pascal code highlighting tags, please take advantage of these wonderful tags as it makes reading your code so much nicer than straight HTML.