Socket Connection testing outside of CS3

I’m writing a online application in flash and I’m trying to test the socket connection over a java server running on localhost. It works fine running in the CS3 environment using ctrl+enter and it’s communicating with the server and sending information back and forth. But I can only test one client at a time like this. When I try to run the swf straight it isn’t connecting. Anybody know how to set up the permissions correctly so I can test locally? Thanks.