Group Policy Questions

*What's the difference between Computer Configuration-> Policies-> Windows Settings-> Deployed Printers and Computer Configuration-> Preferences-> Control Panel Settings-> Printers and User Configuration-> Preferences-> Control Panel Settings-> Printers?  I'm finding a lot of settings that seem to be for the same thing, unless there's something I'm missing.

*Does a screensaver I'm deploying have to be on each PC or can a single file be on the server?

*What is "Enforced" vs. "Link Enabled?"

*Is there a way to override a setting in the Default Domain Policy without deleting that GPO?



Thanks.