Creating Customer User Form

Hell I wish I knew VBA, but I dont!!!

What I'd like is the following:

A user form starting with customer number, which may be entered directly for the correct customer data to be displayed, but then also a search for finding the customer name.

As the name are written, the selections found should be narrowed on the fly to ASAP the correct found to be picked. As picked the rest of the data should be filled in; Address-1, Address-2, Zip, Place, Country

If not found, add new customer by generating a new customer number.

Then at last the option of which sheet to go to next.

Probably quite simple but obviously very hard for me... :-)