Okay for those having problems mounting download MagicISO virtual CD DVD drive from Internet. PC System Requirements OS: Windows XP Vista 7 Processor: 2 GHz Intel Pentium 4 or equivalent memory: 512 MB Graphics: 12 MB Direct3D compatible video card and DirectX 9.0 compatible driver hard disk: 5.5 GB. change character or creature attributes and skills introduce new weapons or dungeons in the game or create entirely new worlds to explore. This includes Oblivion GOTY Edition discs 1 2 along with almost all the official plugin including Battlehorn Castle. When this happens use the original EXE to play online otherwise you may find yourself banned from the game. Okay for those having problems Mounting download MagicISO Virtual CD DVD drive from the internet.PC System Requirements OS: Windows XP Vista 7 Processor: 2 Ghz Intel Pentium 4 or equivalent Memory: 512 MB Graphics: 12 MB Direct3D compatible video card and DirectX 9.0 compatible driver Hard Drive: 5.5 GB.Change character or creature attributes and skills introduce new weapons or dungeons into the game or create entire new worlds to explore.This includes the Oblivion GOTY Edition discs 1 2 along with almost every official plugin Including Battlehorn Castle .When this happens use the original EXE to play online else you could find yourself banned from the game.