Thank you, razvan06. Is that for rooting my phone, though? It seemed different, and some of the instructions it gave require the phone to already be rooted. I'm still confused and have yet to get my phone rooted. Do you have any other suggestions? I really appreciate your help.
>> This is the same method i used to root my N.O. ,it works
Install fastboot [install Android SDK -latest] on the computer.
Boot into bootloader mode by holding down the trackball while turning the device on. You should see a white screen with three skating androids.
Connect the Nexus One to the computer via USB.
On the computer, open terminal [RUN command from Start menu] and run:
fastboot oem unlock
On the Nexus One, a prompt will open up asking you if you are sure you want to unlock the bootloader and again warning you that doing so will void your warranty. If you agree to these terms, press Volume Up to select Yes, and then press the Power button to confirm.
NOTE: Unlocking the bootloader wipes the device.
The Nexus One will reboot.
....after this you will have a unlocked Bootloader !
follow instructions from ClockworkMOD Recovery and you will have a rooted phone after you do all that !