upgrading multiple machines to 2.1r4

[Chris R. Martin]

I'd like to upgrade a few networked machines to 2.1r4, and since I have 
only a slow dialup connection to the net, I'd like to only download each 
package I need once. However, I really don't have the space or time for a 
full mirror. What would be the best way to make sure I can (re)use the 
packages I've downloaded with dselect?

Thanks,
Chris Martin