Glad you like your Bebi lights.
However, these folks are talking about a whole 'nuther animal. I've replaced all of our interior lighting
with Luxeon and Cree high power LEDs. As noted above, Buck Pucks automagically sense the current
draw, and provide an output to the LEDs.
We love ours - but they are overkill. Certainly don't have a problem seeing with them, and replacing fluorescent lights, they draw 50% less power, and light many times better.
If you buy the mounted stars (Cree LEDs - Led Driver - Led Fixtures - Led Optics - Luxeon LEDs - LED Supply.com
), you will have a whole lot easier time mounting your LEDs. Those suckers are tiny!