If you've not done ANYTHING ELSE (no new data entry, no shut-down, nothing
that causes Access to do a "write"), there's an outside chance that the
record might be restored. If you are still in the same table (or form), you
might be able to use the Edit menu to undo a delete. Also, there's a
Microsoft Knowledge Base article (don't recall the number) that deals with
restoring a deleted table/records.
The general answer, however, is you don't. Access even warns you that you
will lose the deleted information. If you haven't made a backup copy before
doing the delete, you may just be out of luck.
Regards
Jeff Boyce
Microsoft Office/Access MVP