Newbie: help with FUNCTION - Mailing list pgsql-general

I'm trying to create  a function that takes 1
paramater (eg an integer) as input, then does 5
database updates or deletes in 5 different SQL
statements and returns 5 integers (in one resultset)
indicating how many rows were affected by the various
updates/deletes.

How do I do this?

How can I specify the names of the 5 output colums?

Thanks