Updating SLES with or without YOU

Hi, I am currently supporting 6 Linux servers, running from 7.2 to 9.0 Pro. Recently my company has purchased SLES 8, and I am in the process of upgrading all servers to SLES 8. The first installation went smoothly without hitch. I did an automatic update using YOU, only problem is that it took ages, and we pay per MB downloaded from the internet (and not cheaply I might add). So I was reasoning that since I have already downloaded all the patches, I should be able to use them on all the other installations. I was not able to figure out how to do so though. Any help would be appreciated. Thanks Marius