I do actually have the discs version of Oblivion, Shievering Isles and Knights of the Nine, I also have the 5th Anniversary Edition, though I'm not sure if that version came with all the small DLC's for Knights of the Nine like Mehrunes Razor etc as I never saw them. I am using the Steam version, the Deluxe version. It has been running fine, I did have 1 problem with OBSE, but I found a solution about adding the Steam.exe, with a command and enabling the Script Extended in the settings tab. Now the game runs through MO with OBSE, through Steam... But apart from that It's been okay. The only reason I'm not using my original discs from 2006 is because I'm just being lazy, having to switch from disc to disc, then applying patches. But I've only got myself to blame if things go badly. Thanks for the reply though.