Say no to best buy, they don't have the best deals. Best Buy is $30 higher on a SB600 flash than
www.jackcamera.com. Not to mention a best buy employee is a lot like a petsmart employee. Typically they don't care/know. Go to a camera shop and try some out. You'll never know till you use them. Also, when it comes to Nikon, I love them. That said,
I think they've screwed up with the D60 and 40. The aftermarket lens selection sucks. If you plan on getting more than 1 lens, go with the D80. It's a bullet proof camera that's well worth the money (if you're going to spend the bucks on a DSLR, you'll probably get more lenses whether you think so or not).
The additional cost of the D80 will make up for itself when you go to get another lens.
Check out b&H photo and do some searching online. If you have a real camera shop that's local it's worth going even if it is a bit more expensive (which I doubt) because they know what's up and can service the camera and help you understand it.