Document Management Questions and Direction

We currently have 1 seat of SW07 and going to add 1-2 seatsin thenext 3 months.  We are a small job shop, and havemanydifferent customers, parts and part numbering schemes.
 I am looking for some guidance on the best way tomoveforward in creating a good document / file storagesolution. PDMWorks looks pretty cool, but at what point doesit makesense to add it, 2-3 seats? 5+?

Anybody have any experience they are willing to share?SolidworksWorkgroup Pdm