The easiest way to get to the server is to use the link provided in the "Building Virtual Worlds" group in the start menu. If you don't have access to this link, then follow these steps:
Go to the "Run..." command on the start menu
Enter "\\locksmith\bvw"
If you're already logged in through your andrew account, an explorer window should just open. Otherwise you'll get this:
Just type "andrew\YourAndrewID" for the User name and enter your password.