halo 2 wont install help

[supersonic124]

i cant get halo 2 vista to install can someone help me? It keeps sayin i need vista but i have vista?:
http://img260.imageshack.us/img260/8534/49817091cf7.jpg
can someone please help me i really want to play this game

[KIWIDOGGIE]

LOL? Did you update your pc with all the latest hotfixes from Microsoft. I had that happen to my laptop but I updated it and it installed fine.

[supersonic124]

where do u get them from

[BobtheGreatII]

I bet from auto update... but I'm not sure.