for the above to work you will need a video card that supports custom resolutions.
I have only tried it on a radeon card, but according to powerstrip these drivers also support custom resolutions. so they should work.
NVIDA Detornator drivers for windows
9x/me/nt /2000/xp
Kyro and Kryo 2 drivers for windows 9x/me
3DFX Vodoo 3/4/5/6 drivers for windows 9x/me/2000