Creating a forest!

Hi everybody,

My company has two locations and I created two different LAN’s based on W2K server coresponding to each location. Now, we decided to join the two LAN’s. On each location I have AD, DNS, WINS and DHCP.
LAN 1 is mycompany.som – TCP/IP 192.168.1.1/254
LAN 2 is location.mycompany.som – TCP/IP 192.168.2.1/254

I connected the two LAN’s by creating a tunelling in internet, both LAN’s connect one two eachother but only if I use TCP/IP.

The problem is: How can I set the trust relationship between the two domains – and also DNS, DNS records so that the computers from both LAN’s see eachother by accessing the names and not the IP addresses. I am looking forward for any sugestions you may have.