For quite a while, we are claiming, that you can install Compiere in 4 hours. And yes, you can do it in 2-3 hours!
If you are not that technical, want to learn how to avoid pitfalls, dig yourself out of a failed Oracle install and how to diagnose and fix problems, come to the Installation Workshop in Dallas, Texas on Sunday 09-Nov in the afternoon.
It's conveniently right before the next Intensive and Technical Training.
Check it out: http://www.compiere.com/training/Dallas03.html