Erin:

If you are printing on blank paper, you could try the Packing List B/W template in Order Entry.

If you have a pre-printed tractor-feed form, you may have to build one from scratch,

In either case, take the time to experiment with different fonts; some will print much faster on dot-matrix printers. (Look for the fonts that have a printer icon beside them in Windows' font list: these are built in to the printer and are often, but not always, faster.)