Welcome aboard! Plenty to learn here! Be sure of what version of Android you're currently running if you want to root, as 2.1 is NOT rootable at this point. To find out, press menu on your home screen, then scroll to the bottom and click "About phone"
Under Firmware version, see what it says. If it says 2.0.1, you're golden. If not, there's going to be a wait (No one's sure exactly how long) to root it, as the "hole" that was found to root the software in the first place has been closed up, and a new one (if it exists) will have to be found...