An odd bit of trouble with Age of Mythology.

[Circle of Paper]

Hello, I'm new here and seeking some help with a problem I'm having with the game Age of Mythology. I installed the game on my mate's computer and everything worked very soundly, however recently I've tried loading the game up only to be met with an error saying that msxml 4.0 is not installed properly. I looked about online for articles and ideas and reinstalled msxml as well as the game, no dice. I have the game installed myself and it's been running without a hitch for years now. I have Windows XP sp2 and my mate is running Windows Vista Home Premium 32bit.

Any help would be greatly appreciated, I've tried all I can think of and I'm starting to believe we may be dry on luck when it comes to playing this one.

Thank you all for your time and take care.