Workflow to copy Item A to Item B, then modify a field in B

Question

Hello all,

I'm very new to SharePoint. I would like to create a Workflow in SP Designer 2007--with SP Server 2007--that copies an existing item (A) to a new a item (B) in the same list, and then updates a field in B based on properties set when a user manually initiates the workflow.

I have played around with the "Copy List Item" workflow but cannot see a way to refer to the newly created/copied item B. All references/lookups point to "Current Item" (A) by default and I do not see an option for specifying B.

Can this be accomplished with a stock workflow, or will this require some extra programming?

Thank you,
Zachary