First DVD Factory 2010 which is the default burning application supplied with VS X3, is pure junk. Corel provided DVD MovieFactory 7SE as a replacement, and should be installed with one of the service packs for VS X3. Have you installed them? Have you tried using DVD MovieFactory 7SE?
You mention downloading a trial version, trial version of what? I've never heard of one of Corel's programs asking for a user name and password during the install routine. You should always download the software, then install it from your system, never try to install it from the internet, which is what that sounds like.
Finally please do not double-post, it only causes confusion. It doesn't get answers any faster. When someone reads your post, and has some helpful information they will post. We're all users just like you, and just volunteer our free time here.
Ron Petersen, Web Board Administrator