I\'ve been trying to disable DEP on my windows 2008 dev box and have not succeeded.
I\'ve tried: System Properties->Performance Options->Data Execution Prevention-
The GUI does not show the 4 modes of DEP operation.
You need to do it at boot time:Boot Parameters to Configure DEP and PAE
However, more info on the error message:
System DEP configuration settings apply only for 32-bit applications and processes when running on 32-bit or 64-bit versions of Windows. On 64-bit versions of Windows, if hardware-enforced DEP is available it is always applied to 64-bit processes and kernel memory spaces and there are no system configuration settings to disable it.