It's safer to browse the internet if all the admin priviledges are not present. This talks about the issue and links up the download you need:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dncode/html/secure11152004.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dncode/html/secure11152004.asp