Mike, that only works on systems that are not behind a firewall - that is an "admin" message system, from what I can gather:
http://www.analogduck.com/blog/modules/new....php?storyid=56
More techie type info is here:
http://mynetwatchman.com/kb/security/artic...pam/netsend.htm
For those who want to profit from this, I guess... :-)
Seriously, these types of popups are a sure sign of an unprotected system - get yourself a firewall (either software or hardware) to get rid of this problem - don't buy software just to fix this problem, do something to fix your security for real.
Alex