Assuming your one 2.1.
All you gotta to do next is fastboot zImage then insmod psfreedom.ko.
To fast boot, you have to have the phone off first. Then hold Vol down button then press Power button. When screen comes up (with the three android skaters) press Vol up to get to FASTBOOT menu.
Then cmd prompt on PC
fastboot boot /path/of/zImage (on the pc)
This assumes you already have Android SDK tools downloaded on your pc.