Re: HELP :S deleting onboard graphics
If there isn't and option in BIOS for disable onboard graphics then look for something like - GPU Preference. If you find that then press enter on it and you should get a menu for onboard, PCI, AGP etc. Select the appropriate one for your card then save and exit BIOS for a reboot.
Desktop - AMD 2600+ Athlon , 1GB DDR, 256MB 9550 ATI Radeon, 120GB Hardrive.
Laptop - Compaq Presario 2500.