>Is there a way to find out if THE administrator (not just an administrator) running my application (in Vista)?

I found a couple of good links
http://visualstudiomagazine.com/columns/article.aspx?editorialsid=2337
http://www.dreamincode.net/code/snippet1577.htm

After reading those to links I understand Vista security a lot better and the difference between THE administrator and AN administrator on Vista.

Einar