I'm running Windows XP.

Thanks for replies BTW, I'll try all your suggestions as soon as possible.

As for the .FBX I fixed it. I got the required file from another computer that had 2008 and placed it in my stdplugs folder. Now I can expert as an .FBX.

Oddly enough though, I re-tried that tutorial exactly the same but when I import into MED Model Editor, my textures don't show -.-"

Trying to figure that out. But anyways once I tried all your suggestions (such as repairing etc.) I'll post again.