I just read this thread about spliting my MDB: "Sharing an Access Database Version: Any Version"...my question is I want multiple users to be able to access the database simultaneously and enter data...will spliting the database allow that to happen and when they save their data will it all be saved to the same table and will that table be in the front end database or the backend database?

Yup, that is one of the great things about a database.

If you split your database (recommended) then the shared table / data will be in the Backend, on the server.