For now, we have multiple servers with different version of sps. Those servers always ask for CDs when clients install new package. So we want some script to change the reg key automatically to a file server. We wanted to know if there could be some issue if we install some package with sp2 if that server only have sp1. Because some files has different date. I mean, slipstreaming service pack doesn't really add a cab and cat file only, right? This is our main concern. thanks for your reply,