unpacking .rpm file?

[jc at trillian.mit.edu (John Chambers)]

Is there any way to simply unpack a .rpm file into  a  directory,  as
can  be  done  with tar?  I got some stuff as a foo.rpm file, and I'd
like to unpack it and make a few changes.   I  don't  want  (or  have
permissions) to overwrite anything in /usr/src/redhat, but that seems
to be about all that rpm is willing to do.   Digging  around  in  TFM
doesn't seem to give any clues ...

-
Subcription/unsubscription/info requests: send e-mail with
"subscribe", "unsubscribe", or "info" on the first line of the
message body to discuss-request at blu.org (Subject line is ignored).