I'M TRYING THIS SET-UP AND AS STATED ABOVE, WONT WORK FOR ME
Sorry for caps lol
I first flashed the customized Nookie Froyo 0.6.8, which erased my internal memory. Then I flashed the prep-dualboot-0.1.zip and cm7-dual-boot-flashable-nightly-3.zip. Press "n" while booting up would boot into the dual boot CM7.