You need to put the phone in "Bootloader Mode".....it is a pretty simple process on upgrading the phone with these Mod Roms

I would do a search on Bootloader or something to that affect.....

Dont be scared if it looked like you bricked the 67...there are work arounds to get it going again

I found this for you:http://pdaphonehome.com/forums/ppc-6...-load-rom.html good info.