One of the many things Administrators fight is getting applications to work as a non-administrator.  There are a few tools available to assist, such as FileMon, RegMon, the Application Compatibility Toolkit,  etc.  There is a new tool in town, that also helps to get applications working with the new Windows Vista model: LUA Buglight. It’s not a tool for the average user mind you, but it can help narrow down problems with apps.  How it works is it attaches itself to the application to watch what it does, it elevates the rights so the app can do what it needs, but it tracks when it makes use of rights that a normal user would have problems.   Check it out if you need help with an application (note that it’s in public beta) http://blogs.msdn.com/aaron_margosis/archive/2006/08/07/LuaBuglight.aspx