I think yours is similar to the query at the centre of the thread about invoice and inventory collaboration.
As I downloaded it, the inventory program simply tells you what you currently have in stock. It does not seem to keep track of historical information (or, if it does, this is hidden from the user).
This kind of setup is useless to me, I can just look in my storage room. What I need to do is map items in my storage room to purchases and sales receipts (you can record sales and purchases in the invoice express application but how to link them to the info in the inventory?).
I have tried asking NCH about this, but I wouldn't hold my breath about receiving any replies whatsoever. Strange that they don't seem to be interested in showing how their software CAN indeed do what we need it to do...