Code:
[boot loader]
timeout=15
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /noguiboot /NoExecute=AlwaysOff /noPae
multi(0)disk(0)rdisk(1)partition(1)\WINDOWS="Windows XP Professional x64 Edition" /fastdetect /noguiboot
It disables the DEP successfully and the /nopae is just there out of desperation.
Go figure why it doesn't turn off
