Can i change the subnet on the vpn side of a server without having to change its whole lan (to avoid collission)

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http://serverfault.com – Ohai, [edit: seems i wasnt clear enough, so i have rewritten parts] I have one computer (A) running xp ready to recieve vpn connections on a local network (connected to the internet) in the 192.168.0.x range with the approriate ports forwarded from the router. Client computer (B) is a windows 7 laptop on a different local network (connected to the internet) which also is configured to 192.168.0.x Now, this obviously causes problems when B connects to A, specifically that B can only find A by IP and not by name. Changing the range for B is not a good option because there are many many wifi (HowTos)