Well, this seems to be the only thread I found discussing the Icon Remote with Media Center, so here goes:
I have the Icon RF remote. Nice looking gadget, but it doesn't seem to be well suited to use with Media Center.
There are no codes for the Media Center Remote in the Icon RF Remote - so you have to use the Learning function. If anybody from X10 is interested, there are several manufacturers who sell Media Center Remotes - and they are fairly ubiquitous between Media Center Machines. I've used the same Media Center Remote that I got with my Media Center 2005 machine to control Windows Vista Ulimate and Windows 7 Ulitmate. Some remotes have slightly different design, (buttons are in different places) but for the most part, they all do the same thing.
The remote itself seems to be setup closer to a TIVO remote. Some of the functionality of the Media Center Remote doesn't seem to transfer over well. Actually, if there was just a way to relabel the buttons, I think they could be "learned". I went through last night and programmed a Icon RF remote, and when I got to the "Start" button, I realized that there weren't any decent buttons left. I used the "Thumbs up" button for "Start" (since MCE doesn't have thumbs up, thumbs down), and I had to make a few other creative changes, which work - but the more changes you make, the harder the remote is to use.
It was a lot cheaper than my harmony one remote, and seems to work ok, just not as easy as the advertising would have you believe.
Other issues - doesn't support Sony Cineza projector (didn't seem to be able to learn the code either). No easy way to remove a device.