you need to unlock it.
Use nueSPL 2.47
http://forum.ppcgeeks.com/showthread...ghlight=nueSPL
After you install that you pretty much go through the same steps as the 6700. That I can think of off the top of my head. Its been a while since I flashed my apache.
EDIT: This will give you more info. It definatly is a little bit scarier the first time you flash a mogul. But after the first one its really easy. Just pay attention to your radio version and that you are using the appropriate one for the rom. Basically all the newer roms that have come out recommend radio 3.42.
http://forum.ppcgeeks.com/showthread.php?t=33857