Updating your BIOS and motherboard chipset drivers probably wouldn't hurt either.

Note that you have given us inadequate data to say much - for starters, you've said nothing about your resolution or other settings you're trying to run the game at, nor where you're at that you're getting 20FPS (e.g. 20FPS in Dalaran is pretty high). And you told us that your "DX Setup Parameters" weren't found - but not even what version of Windows this is on, or that much about the computer's specifications. Yeah...if you knew which bits were important, you'd know the answer already...but we probably need more than just that. It's hard to give suggestions beyond the generic "update your drivers, why haven't you updated your drivers yet" response with so little to go on.