Url's not opening in "test movie" mode.

Howdy, I installed Netscape (sloppily) for testing purposes and it hijacked a lot of my file extensions. I have since removed it, but now the "test movie" mode isn't opening Url's (from a button, for example) in a default browser, or anywhere.

Anyone know where I should be looking to get that working again?

(Flash MX 2004 pro)

this isn't much help to you, but i have had lots of problems with test movie- alot of things don't work correctly/display the same as when i actually export it, so i actually gave up trying to test with test movie.:(