Vista Aero theme not working on iMac

[Deviatorz]

I just bought an 24" iMac and used bootcamp to partition the hard drive and installed Windows Vista Business on it. The OS is running fine however I can't get the Vista Aero theme to work. The iMac is running on ATI Radeon HD 2600 PRO w/256MB GDDR3 graphics card. This GC should have Shader Model 4.0 support and Aero only needs Shader Model 2.0 support. I went to personalized>Windows Color and Appearance and the Aero theme is not there as a selection and I also refreshed the index scoring, but it gave it a 1.0 rating. How should I fixed this so I can use Aero theme?
Thanks in advanced.

 

[Eidorian]

Have you installed the drivers for the GPU? Aero won't kick in until you've installed the drivers and then run the Windos Experience Rating test.

 

[SnowLeopard2008]

Go to the C drive, System, Performance, and something else I can't think of atm. You have to delete the index scores and start over. Sometimes it gets stuck at 1.0 for some reason. Update your drivers though.

 

[Deviatorz]

I think its because I forgot to connected the ethernet cord. Vista needed to validate my OEM cd key. I plugged in my Ethernet cord and restarted and Aero showed up as an option. Updating the GC's driver wasn't a bad idea as well. Thanks for the help guys and have a merry Christmas!