Thanks for the reply, Pat.
Yes, I agree that this is a complicated issue. And without having to unload all my issues onto this forum, I'll say that they currently use QuickBooks, but there are certain tasks that the Sales and Purchasing sides do on a routine basis that would be better served by a database.
Eventually, they want to have the ability to export QB data into Access to create more complex reports. For now, though, the goal is to help out sales/purchasing.
Using this design, I've already taken what they're using in Excel, and created some better forms in Access. Of course, being a relative noob to this, I have my doubts.
Thanks, again.