Act! by Sage 2011 System Requirements
All minimum system requirements are based on a single-user environment (one computer accessing a local database). In a shared environment, Act! Pro is designed to work with up to 10 users and Act! Premium is designed to work with more than 10 users. Recommended server system requirements are for environments of more than one user. Customer registration and activation are required. Your system must meet the minimum requirements to be eligible for technical support.