This is a BETA release and someone correct me if I am wrong. Before you even contemplate doing this, know that you need a PCI Video Card, preferably ATi, and a backup of the original BIOS, in case something goes wrong. If you don't have a PCI video card, and you happen to be a ninja, you can try blindflashing if something goes wrong. You will need: Floppy Disc Drive one Floppy Disc Nibitor NvFlash AtiTool A PCI Video Card, preferably ATi. Now that we have these things, you insert your Floppy Disc in the Floppy Drive. We go to My Computer, right-click on the A:/ drive, and select Format... now you have it create a MS-DOS startup disc. (This is a method for Windows XP, if you are using some other Operating System you need to find another way) Now that we have the MS-DOS startup disc, we copy nvflash.exe and cwsdpmi.exe to the disc. We insert the MS-DOS startup disc into the Floppy Drive with these items and boot from it. Now that we are on our way to actually flashing the Video Card, we first make a copy of the origional BIOS. We type "nvflash.exe -b backup.rom" and press enter, giving you a backup of your original Video Card BIOS. Now we reboot back into Windows. We copy the backup.rom from the MS-DOS startup disc to the Hard Drive and open it up with NiBitor. Now let's say you want to overclcok from 400/1100 to 500/1250 but the Video Card is unstable, for example. If you have a good aftermarket cooler on your Video Card and are comfortable with your temperatures, you can increase the core voltage in NiBitor from say 1.5v to 1.6v for example. Now that we increased our voltages, we save the new BIOS as something like newbios or whatever name you want. Check to make sure you have your unedited backup on the MS-DOS startup disc, and check to make sure you have your newbios file saved with all your desired values edited. Now we put the MS-DOS startup disc back in and go into DOS again, hopefully for the last time. We type "nvflash -4 -5 -6 newbios.bin". If you get any errors or strange results the WORST thing you can do is restart the computer. We type "nvflash -4 -5 -6 backup.bin" to restore the origional BIOS. Now we edit our newbios.bin to more reasonable settings with NiBitor since your Video Card didn't like it. Reboot back into Windows. Now that we successfully flashed our Video Card to make it run faster, or if your flash went wrong and you had to restore the backup, Open up AtiTool and do a Scan for Artifacts and see what you pick up (or your favorite game that you notice artifacts in.) If it seems to be running well, check your temperatures to make sure it isn't going to overheat on you if your Video Card liked the new BIOS. If you restored the backup, follow this procedure anyway to make sure your Video Card is still in good working order. Now, you (hopefully) still have a working video card either way, and may you be happy if it worked out for you, whether you had to re-flash to the backup or not.