Looking for some rooting help

[uscjunkie]

I have rooted my EVO using a Mac and unrevoked and it went flawlessly but I am trying to help out a friend root his phone and we have to use a PC and it is being a pain in the butt. I loaded the Android USB Driver and that went fine. Then I enabled USB debugging and ran the Unrevoked software and it never works. It goes through the process just fine....I click on HBoot and the program restarts the phone. Once it comes back up the Unrevoked software says Failed to flash recovery image. The phone is still version 2.2 with a baseband version 2.15.00.11.19 with 0003 Hardware version. Anyone tell me what I might try to get this to work?

Thanks