Hi Luis,
Allthough I just managed to get logger working, and havn't played around much it looks like this could be a start. Link that with "notifiations", and you have a basic platform. I guess the basic OACS user information takes care of the rest. As matter of fact I am in need of a similar set up, so I'll keep you posted on my findings. here may be some usefull tidbits in the "payment gatway" and "e-commerce" you could also use.
cheers
Ben
