Have old (expired) CDs with keys; can the subscription be restored?

The thread subject pretty much says it all.  I have in hand a group of four CDs (AntiVirus Professional; Personal Firewall; SystemWorks; CleanSweep) and the keys for activation (required for the first two).  The subscription has lapsed, so I'm curious to find out whether those could be re-activated by someone else assuming I sold/gave away those discs (I have no need for them in the foreseeable future).  Thanks.