I have had a couple people with the new MacBook Pro's run into issues relating to server connections. Since we've upgraded (migrated) from 10.4 Tiger to 10.5 Leopard, some of the protocols are slightly different for connecting to the student or teacher servers. As a result, you get an alert stating "The text entered does not appear to be a recognized URL format" when attempting to connect to a server in the Finder (via Go > Connect to Server).
Here is how to fix it...
In the Finder, double-click on your hard disk.
1.) Open the folder named System.
2.) Open the Library folder.
3.) Open the Filesystems folder.
4.) Drag the folder named "URLMount (from old Mac)" to your desktop as a precautionary backup.
5.) Once the copy is complete, control-click the original "URLMount (from old Mac)" folder (not the one on your desktop) and choose "Move to Trash" from the contextual menu.
6.) Enter the name and password of an administrator if prompted. The first user account created on your Mac is an administrator account.