Sony Vaio Z - Can't rotate screen

For once I decide to start using an external monitor in portrait mode for documents, but I stumbled into a bump in the road.
It seems I can't rotate screens or even add custom resolutions and timing options. All these features are simply missing from the NVIDIA control panel. I'm unable to update the drivers as well, since Sony only want their own drivers running.

Already tried iRotate from the guys who made PStrip, but it didn't work, after the screen flashes back it simply goes back to normal.

Running Windows XP on NVIDIA GT330m

Anyone know what to do? Thanks for reading.


EDIT: Just tried with my Z2 as well, running Win 7 on Intel HD 3000, same results, screen rotate simply doesn't work, it immediately reverts.

EDIT 2: Hooked up the monitor to my desktop computer, rotation works fine here from NVIDIA's driver control panel.

The issue seems exclusive to my Vaios, does anyone happen to know a fix?

 

You need to use modded drivers, or at least mod the .inf and reinstall the driver after enabling rotation in the inf. Look in the thread http://forum.notebookreview.com/sony/342947-my-discoveries-vaio-z-s-hybrid-graphics.html for the Z1 and look at the special features offered by Andrew08 for his drivers. Once you figure out how it is done, you can do it for any driver. Works only for the discrete GPU. AFAIK we haven't yet figured out how to enable rotation in the Intel driver.