Sorry, Vertical use needs to be at 640X480 or above, but try it out, in my opinion it actually lets better this way on arcade montitor, its what I run mine at. Make sure you have anti aliasing turned on, and you can use the hidden NoRotatraionRestrictions setting to make it use 32 bit colour (ant antialiasing)when rotated. I dont think your'll be disapointed if you have a fastish PC. Thanks, Tom.