You DO NOT need a ROM to run SetCPU, all you need to do is be rooted. However, if you want to clock it back up to 600mhz, you'll need our ROM here
Which one does it want me to download when it says to download the debug drivers?
Motorola 4.2.0 Driver with MotoConnect* (for 32-bit versions of Windows®) or
PC Driver 1 (W370, W375, W376g, W377) or PC Driver 2 (W216, W230, W230x, W23x, W259, W270, W270x, W27x, W388, W396, W397, W397v)
page. It should tell you how to install the rom. As far as 2.1 the best way to update would be to wait a few days after it is release someone will released a custom rom.
You can always go back to the stock 2.0.1 there many threads explaining how.
I am running the sholes.info 1.1 and havent looked back sense.
So I can always flash my firmware back to the original 2.0.1? Please post a link to the best topic explaining how to do this please. And when 2.1 gets released will my Droid recognize it in the software update?