You are off topic for the forum you posted to, which is dedicated to Microsoft Security Esentials Beta
You may want to try the Microsoft Public newsgroups here: http://www.microsoft.com/communities/newsgroups/list/en-us/default.aspx
If you are getting this prompt from Defender, you may want to seek help here:
http://www.microsoft.com/athome/security/spyware/software/newsgroups/default.mspx
-steve