How are you installing Vista, using VMware, Paralles, or Bootcamp?
In any case it is a virtulization, you might need all that extra windows
"stuff" to run vista properly, but you can always disable features you don't
want by doing the following:
1) click the start button (blue circle windows button)
2) click control panel, under Programs, click "unistall programs".
3) in the programs and features screen, select "Turn Windows features on or
off " last choice on the left menu.
4) Windows Vista will now ask for your permission to access the Windows
Vista Features. You should click on the Continue button to give this
permission.
5) Next to each feature is a box that can have three states. If the checkbox
is checked that means that the feature, and all of its subfeatures if it has
any, are enabled. If the box is filled with a solid blue color, then that
means that some subfeatures of this feature are enabled but not all of them.
If the checkbox is empty, then that feature and none of its subfeatures are
enabled.
To enable a feature, simply put a checkmark next to the feature name. To
disable a feature simply remove the check from the feature or one of its
subfeatures. When you are happy with how you disabled and enabled the
features, you should click on the OK button to save these changes.
I am running Vista on my iMac, and this is how I customize Vista for me!
Good Luck!