1. Tools | Letters and Mailings | Envelopes and Labels.
2. On the Labels tab, click Options...
3. In the Label Options dialog, with "Avery standard" selected by "Label
products," scroll down to "5389 - Post Card" under "Product number" and
select that. Click OK.
4. Back in the Labels dialog, click New Document. You will have a sheet of
postcards. They are formatted as a table, so make sure you have table
gridlines displayed (Table | Show Gridlines) so you can see the card
boundaries.
