How to merge multipel yum caches and cache portability

[Arthur Pemberton]

How would I go about merging the /var/cache/yum/ of multiple, up-to-date 
machines ? And how portable is this folder? Can I just copy it to 
another machine?

I just installed FC3, and haven't spend almost the entire day 
downloading updates. I going to install FC3 on another machien soon, 
which may or maynto eb attached to my network, so I would like to be 
able to just burn the cache to acdrom, adn then copy it to another machine.

Please advise.