If you have not rooted a stock 2.1 ESE81 Update 1 using the SBF to place SPRecovery on the phone using RSD Lite...PLEASE read the sticky thread before offering noobs advice. We are creating a heck of a lot of confusion with all the bad advice peppered into some good advice and the noobs have no idea which to follow.
It is my opine that RSD Lite is not as evil as some want us to believe. It probably scares some of the devs cuz if you learn how easy it is you may not want to use the easy install apps they create. 2.1 has a nice foundation and makes custom ROMs a little less appealing.
Not saying there is no reason to chose your favorite rom, but a lot of the glamor is now available in a stock ROM. I could care less if you decide to flash the SPRecovery with RSD Lite. I just ask that you read the thread so we stop confusing the noobs.