Thanks for your answer Glide!
I'm already using the 3dfx Tools, but I as I'm using a remote control to switch to TVOut mode and back to PC Monitor mode I'm looking for a program that I can call from the command line to switch back and forth.
If you know of such a program I'll be glad to know about it.

Thanks again.

Hi!
I've read in a technical reference that tvtool.dll (the dll wich switch to the tv output) has an External Call Interface (ECI) that can be called to switch to TV without using the 3dfx Hub.
Had anyone tryed this method?
My OS is xp pro (sp1 installed) and I have the voodoo3 3000 AGP card but I can't make this method to work.
I need a fast and easy TV switch tool, and the ECI seemed to be the one... in case it works!