Question : Adding dns information to a DNS host.

Scenario:
We have about 15 schools where we administer all the clients. The hostnames is only a number like "PC040787". This is because we like to have "roaming" thick clients and the clients are never personal and can be used on several schools or classrooms / departments by different users. All clients are member of the same Windows server 2003 domain (Will be upgraded to Windows 2008 very soon). Every location have its own IP-subnet but the pc's are .

Problem:
We want to find out where the pc is located atm only by making a reverse DNS query on the client by nslookup or dig (linux) and then by DNS-name get the current location by the client.

Ex: "PC08737.subdomain.domain.net" could be like "PC08737.nameofschool.subdomain.domain.net" How can we achieve this without mess up windows' usage of DNS in servicelookups/dynamic registrations +++ ?

Answer : Adding dns information to a DNS host.

You're looking at a Disjoint Namespace if you're to do this with DNS and expect it to be automatic. It's not a trivial thing to configure, for the MS documentation on this see:

http://technet.microsoft.com/en-us/library/cc773264%28WS.10%29.aspx

I would be more inclined to store the site name in AD, how useful that is does depends, to an extent, on how you feel about scripting.

Chris