Hi - (1) does zen-cart have multiple separate fields per product item?

We need the Catalog Number, Description, Price, + Qty for each item in separate fields, as follows:

Cat.#: 01020902
Descr: IndoorVT4ss-dsc
Price: 224.00
Qty: 1
Subtot: 224.00
Cat.#: 01010308
Descr: MKit-Big-Dsc
Price: 154.00
Qty: 2
Subtot: 308.00
Total: 532.00

Our current shopcart - vshoppingcart.com - lumps all items into two fields as follows:

Field1-Description: [01020902 IndoorVT4ss-dsc|224.00|1][01010308 MKit-Big-Dsc|154.00|2]

Field2-Amount: $532.00

(2) If zen-cart has multiple fields per item, but our secure server doesn't allow it (eprocessingnetwork.com or "epn") then can paypal checkout handle it?

(3) Does zen-cart work with epn? epn accepts authorize.net codes.

thank you for your kind help - Val