you need to replace/edit a file (/include/linux/pm.h) for them to work. or, i think MDK might have a patch for it by now.
also, while you're at it, you prolly should upgrade to the latest Nvidia drivers. the current version is -6111. you can get the
HERE.
for the fix to the problem, see
This Thread. you can also go
HERE, post#11 to get a tar.gz version of that file. it's small (5kb) & it's safe (i know these people).
finally, see my sig for Nvidia install info should you have any problems with that.
otis