Bluetooth range is limited unless you're using higher-powered transceivers - and those are usually found as modules (such as USB) rather than built-in to standard input devices like keyboards and mice. You'll find with those devices your BT range is lower than IR. I can get 40 feet (line of site) with many IR remotes. But only about 10 feet with BT.
Anyway, you're looking for two different things here. BT Input devices (mice and keyboards) are already available from many sources. Test them to see if you're happy - they will be used only to directly control your computer (and software running on it). Next buy a USB IR blaster (or transceiver) such as this one:
http://www.usbuirt.com/or this one:
[Link: home-electro.com]Then you'll need to use suitable software to communicate IR through that device. You'll find more info on which programs to use on the above sites. Might also want to look into Lirc (or Winlirc) because that's what you'll likely end up using for the IR. Girder should also be able to do this for you.
The link for the Bluebird project is an interesting proof of concept, but rather irrelevant when you can just use IR directly from a PDA. The most interesting application would be for a Cell phone. But the range problems remain, and you'll still need the most important part: software.
But back to the start for a second. Really DEC's first question is the most important one: Why? Make sure this is actually a solution for your problem. If it isn't, there's no sense in persuing it. "More than one way to skin a cat" and all that.
Bruno
