Question: "Can I setup a DROPDOWN field in a portal that would show all the account numbers and their descriptions?
Yes. Define a value list and specify both acctNumber and Description from the Accounts table as a two column value list. You can format fields in portals just like you would in any other part of a layout.
I know I can do it with Value Lists but can I get the same affect with some kind of lookup?
What?? Describe what you have in mind here. Since you can do it with a value list, why would you need something else that does the same thing?
Kewl! I totally overlooked the ability to designate table fields in value lists. Kudos!