Scanning in a list

I need to scan in a list of bar codes with max efficiency.

Now I have a form with a single field. When I scan the bar code I populate the field, force a tab, do a table insert and redirect back to the field for the next entry

I am trying to figure out how to do a scan in a list. That is, scan in a code, force an entry and have focus go to next row, so I can see the previous entries in my list

Any ideas?