Go to the website with the bios upgrade, and see what problems it is correcting. Often, they are listed. If your new mobo is running well, there's no need to flash the bios. If you want to flash your bios with windows xp, use a windows 98 bootdisk, and set your boot sequence in the bios to floppy first. Download the bios to a formated floppy, not to the bootdisk. Reboot with the 98 bootdisk in the floppy drive. After the booting is finished, you'll get an "a" prompt. Insert the disk with your new bios version. Type "dir" to get a listing of all the files. You should see your new file, possibly with "bin" at the end. Then write down the file name exactly as it appears. Type "awdflash" and when it appears, it will ask for the file name. Type it exactly as it appears on the floppy. Then it will ask you if you want to save the old file. Type "Y' and wait and see if it is saved. Sometimes, you'll get some kind of error message, and it will go back to the "a" prompt. If the file isn't saved, try again, and this time, type "n" when asked if you want to save the old bios file. Then, the new file will start loading. A white rectangular box appears on the screen as the file is loading. Don't touch or reset anything, or your mobo bios will be fried. Wait until the screen instructs you to remove the floppy, and hit "F1" to reboot. Then hit the "del" key to enter the bios, load optimized settings, and save and exit. Then when the system has rebooted, enter the bios again to make any changes you like. If you can't remember all this, try printing a copy of these instructions. good luck.