Adding records to a domain I don't control for anyone who uses my nameserver

[Brandon Dimcheff]

Hello,

I'm trying to configure BIND to add some records to a domain that I  
don't control, so that anybody who uses my nameserver will have the  
additional records.  Specifically, I'm trying to add xmpp SRV records  
so our jabber infrastructure that uses our nameserver can contact a  
handful of domains properly.  All other records for the domain should  
work as defined by their authoritative server.

Example:

dig @127.0.0.1 SRV _xmpp_client._tcp.example.com. should return my SRV  
record hosted by my server
dig @127.0.0.1 A example.com should return example.com's A record by  
recursive lookup

Does anybody have any suggestions?  I've tried a few different things,  
but none of them seem to have worked.

Thanks,
Brandon