Post tweet with Actionscript


Like the title says, I’d like to post tweets ( automaticly ) on behalf of the current user with actionscript 3. Now I’ve done quite a bit of research but I can’t get my thick head around it. I’ve found several tutorials and documentation, but nothing is working for me.
Could anyone point me in the right direction, what do I need to do and how do I do it ?
I know I need Authentication with OAuth, but I could use all the help I can get if you know any good tutorial or have succefully made what I need and care to explain.

Thanks in advance