New to this
 

I have the Anniversary edition will it work on emulator servers?

Unfortunately not, it must be one of these versions:

http://www.eqemulator.net/wiki/wikka...ClientVersions

Thank you very much

does it matter if i use the same discs as my son uses? (cd key and stuff?)

The CD key isn't required for EQEmu servers, so yes, using your son's disks to install the game would work fine.

Does underfoot include all of the expansions before it, and its self? According to http://www.eqemulator.net/wiki/wikka...akka=EverQuest, Secrets of faydwer was the last compilation expansion pack.

Yes, if you go to Steam it does tell you specifically in the heading.