Thread: computer remote control

I know there a few remotes out there to use with the computer, but has anone made their computer into a remote? Wat I want to be able to do it rea in IR codes to the computer, and then take a bitmap, and define certain area that when clicked will send whatever IR code I tell it out of some sort of IR transmitter on a wire (ie ir blaster). I am looking to be able to control things with my computer that come with a remote. This would let you use a computer to control a factory stereo or XM receiver. Please let me know if you can do this and how.