I just had a wall unit installed. Is there a remote that will operate all of my components that are installed behind wood doors?? Or should I just have cloth installed? (I like the look of the wood doors better.)
I would appreciate any imput.

you have a few options if you decide to go with wood doors

IR repeaters: they usually have to parts an IR receiver and an IR transmitter. The receiver would be in the room and the emitter would be behind the doors.
- RF repeaters: these receive an IR command and transmit an RF command that latter gets converted back to IR
- wired repeaters: these use a cable between the receiver and transmitter to send the signal. so you will need to have a hole to pass a little cable

Remote that does RF to a base: there are some remotes that can send RF to a base, and the base would need to be behind the doors.
RTI T2:
Denon Aktis:
Prontos (the Philips ProntoPro, Marantz RC5200, 9200 and Onkyo Chad): in my opinion the best choice if you go this route.

Anthony - Thanks for your imput.

Is the new Sony av3000 capable of doing this??
I'm hoping to not have to spend too much money
for a remote. Under 300 - 400??

Get whatever remote you want, then add Xantech wired repeaters. They have some IR receivers that are small enough you'd never notice them attached to the outside of your cabinet. As mentioned, there are RF products as well, but if this is all one room you may as well stay with wired.

If you have a remote that you like, then any one of them will work with a repeater.
wired repeaters like the Xantech mentioned by Spiky should be better (no interference) but if you go RF then you have the Radioshack pyramids and a few models at [Link: smarthome.com]

Go to the custom installers forum and read everything IR & cabinet related.
Sounds like your doors are already in place. Is there any open shelving in your wall unit? That would be a good place to "stealth-in" your IR receiver should you choose to go IR.

Anthony pretty much covered the differences in the two strategies.

To add to Anthony's words, you can only totally hide your RF system if your remote is RF capable. If not, you will need to have a base that "sees" and relays your commands from your IR remote and you end up with an "R2D2" like 'droid sitting somewhat line-of-sight in your room. Some of these manufacturers seem convinced we'd all love to have a "Powermid" type device cluttering up our living space. I'm sure defenders would say otherwise, but I haven't seen one of these that even attempts to fit in with anyone's decor. (Okay, Tutankhamun and C3PO might have liked them.)

If you're satisfied to sit in one room and control the system through doors then a simple IR repeating system might serve you well. If you go with IR and find out later you want to "wander" then you'll end up adding RF anyway. (Unless you get in the mood to tackle hardwiring to remote repeater/receivers.)

If you want the freedom to roam the house and control volume/change: tracks/stations/discs, then an RF remote and RF system would be the ticket. Just check the specs on what you're buying so you don't get behind a few walls and find out it won't phone home. RF is definitely cool, and once you're in at the base level you won't have to meddle with how to extend your system later. (And if you're in the kitchen you won't have to pop around the corner and point the remote to mute the volume when you're busy talking to tele-marketers.)

If you don't want to pony up for an RF remote or you like your current IR remote, then it's IR repeating for you. (And if you're SURE you'll be happy with controlling from one area.)

[Link: iautomate.com]
http://www.audioplex.com