between 2 video cards

I would try going to device manager and right clicking the Intel card and select "disable". That should do it.

You say you tried to use FX3 and it detects your intergrated intel card. DID FX3 work?

I'm going to assume your computer came with both cards when you purchased it. If this was the case it should detect your intel card and use your NVIDA card to boost performance and swaps between them to save power. If you check bench marks and other things on the two cards you will see they are almose totally equal. I don't believe you will gain anything by trying to use just one card as you computer was made for using two when needed. If you wish to disable the intel card go ahead but your screen may go black as it is the one first in line on your motherboard. What else you can check is in the Device Mgr is to make sure you NVIDA card is listed as enabled. If so it was made to work as I said.

This is done almost always in Laptops only.

What OS are you using?

erichabit

Answer Neil Banfield question as he is the real expert.

thank you smuch vo yr answers.. but it was true that i purchased it indeed wit 2 graphic cards inside it.. i thought that my laptop use intel integrated card 3000 as its generic php monitor cards and if it played high-resolution game or programs it will switch between them itself.. i use windows 7 ultimate sp1 , and my windowFX is working well, but it moves slowly and could not be fast.. i think that it will use the Nvidia gt 540 cards itself when windowFX do its 'job' but it didnt.. 

WindowFX3 is not designed for Windows 7 (It is XP only) and has not been available for purchase in years.

WindowFX 4 or 5 are needed for Windows Vista / 7 support.  WindowFX5 being the current in beta version which brings animations and wobbly windows to Windows 7.