I was going to suggest that whichever protocol that you decide to use that you should first check that it supports all of the types of devices that you plan to use, but as you are only dimming lights all of them do that I am sure.

Remote Central is a great resource and I have always found the people here to be very helpful. In my opinion it has the best forum software too. I believe Daniel wrote it.

However, there is a forum site that specializes in home automation as opposed to remote controls that you might find interesting and perhaps you might get some suggestions on controlling your screen there too.

In any event, I think you will find a lot of discussion about different automation technologies at www.cocoontech.com

Good luck, Jim.