Use Vista and take advantage of or UAC because this UAC allows you to do so. You can grant VS full rights, when necessary, and rights to the application / website.
I am running VS2008 on Vista with UAC enabled. I had only one question worth mentioning.
I sometimes have problems with file permissions when I run VS with elevated privileges and then run it without them. VS will not be able to delete old build files, but if I delete them from Explorer, it will be fine. Again, this only happens when switching between high and low resolutions.
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