How can I compare the schema of two databases?
If you cannot use one of the many tools out there because of connectivity problems and want an "offline" compare, you can use SSMS to generate scripts for all database objects by right clicking on the database and using the "Tasks.../Generate Scripts" function, and make sure you select to create one file per object.

When you have done that for both databases, get the two sets of scripts onto a local machine in two separate folders and use WinMerge (or similar) to compare the two.