Copy a row with one change?

Hello. I have a table that has 3 fields as a primary key - JobID (int),
PONumber (char 16) and PORevision (tinyint). I need to make a new row with
the same data except the PORevision field should be increased by 1. I have
tried a few things but nothing seems to work. I could do it in my vb.net
code but I am sure it would be better in the sql database.
Thanks,
Gerry
INSERT INTO YourTable (jobid, ponumber, porevision, other_col, ...)
SELECT jobid, ponumber, porevision+1, other_col, ...
FROM YourTable
WHERE ...
David Portas
SQL Server MVP