Is there any way of creating a simple install rpm with no source?

[Pep <pep ticketweb co uk>]

I want to create a rpm from our software for easier installing in our server 
farm.

All the examples I can find all expect me to have a source tar ball that I 
want rpm to create a source and binary rpm from, which is not what I want to 
do :(

All I want to do is simply create a rpm that will package the binaries that 
are already built not do the complete build for me.

Can this be done, if so can someone please point me at a good example so that 
I can follow it?

TIA,
Pep.