Root Please help with installing cyanogenmod6 rc2!!!

[BlaZinStAnG]

Hey. I have followed the instructions perfectly on http://wiki.cyanogenmod.com/index.php?title=Full_Update_Guide_-_HTC_Dream AND http://wiki.cyanogenmod.com/index.php?title=DangerSPL_%26_CyanogenMod_5/6 but when I get to installing the DangerSPL, after I reboot, the screen gets stuck on the Tmobile G1 startup screen. . Please helP!!!!!