Our project is to create an operations application w/ multiple windows and databases: customer maintainance, orders, etc. Calculations will be standard; totals on invoices, credit limit maintainance, etc. This app will live on a central server with up to 20 or so users on simultaneously. Question: I seek opinions on whether it would be advisable to use Access or VB to build this app. Of course, speed is an issue, and database security, and multi-user issues, and design, and anything else that comes to mind. Thank you for your thoughts.