More than likely yes!  If your current system can export to an excel spread sheet or if you have the information in Microsoft Outlook  (or in a hotmail/MS Office Live acount).

The good news for Microsoft Office 2007 Outlook users is with PSM quest (V6.1 and V6.2)  this is an automated process, just the click of a button.  If you currently track your Customer/Client and Vendor information in Outlook you will be able to perform an automated import of all of their contact information into PSM with a few mouse clicks, 10 or a thousand all the information will be added in less than a minute, addresses, emails, phone numbers, web addresses etc.