You know, you might have figured out the problem, I saw the diagram on back of the box, but I never realized if this was the bottom or top. The pictoral diagram shows exactly what I did, but the transistor could be reversed just as you mentioned, I will check it out tonight.
One other thing I noticed is that when I set my universal power supply to 12VDC, it puts out around 16VDC (probably becaues it isn't a regulated power supply?), does this drop to 12VDC when in use, or is this going to be a problem? Thanks!
Rupp: The powermids do sound much easier, but there are 2 reasons why I don't want to go that route: 1) My RS 15-2117 remote has a similer repeater system (RF->IR), and I have some serious noise problems, and 2) I love doing things myself, just more rewarding (as long as I don't burn the house down that is). I have learnt a lot about electronics in the last few months just by playing with resistors and having you guys help me out with my projects, and it is getting addicting.