i want to upgrade my existing network with out changing its ip address and its current configuration to gain access to the internet. I have a d-link 16 port switch, wrt54gs router and a modem from the isp.

the goal is to give internet access to the existing network and to have a wifi access on the area.

the ip address of wrt24gs is 192.168.1.1 and a subnet mask of 255.255.255.0

Equipment
1 – Server (AMD Athalon XP 2800+; 1GB RAM; 80GB HDD)
2 – NICs
1 – 8-port workgroup switch (linksys EZXS88W)
1 – 4-port wireless G broadband router (linksys WRT54GS)
1 – Motorola Surfboard Modem (broadband from ISP)

Equipment Setup
The server’s two NICs are setup as follows:

NIC (Router)
IP: 192.168.1.107 (static)
MASK: 255.255.255.0
GATEWAY: 192.168.1.1
DNS: 192.168.1.122

NIC (Internet)
IP: 192.168.1.122 (dynamic)
MASK: 255.255.255.0
GATEWAY: 192.168.1.1
DNS: 192.168.1.122

I have one computer (client – windows XP Pro) connected to the 8-port switch. The uplink port on the switch is connected to the Router NIC. The Internet NIC is connected to a port on the router (192.168.1.1 – DHCP is on) and the router is connected (via uplink port) to the modem.

On the server, I installed DNS for mydomain.com (my computers name is myhost) so there are records in there for mydomain.com and myhost.mydomain.com. These include NS, A and SOA records all out of the box and unmodified from the wizards implementation of them. I have my forward lookup zone set for mydomain.com and a reverse lookup zone set for 1.168.192.inaddr.arpa (i believe that was the syntax).

On the server I have also installed active directory (immediately after DNS was installed and the internet connection was tested and worked). I used DCPROMO to get active directory up and running and it passed it’s diagnostic test with flying colors. I then proceeded to setup one new account named ‘adam’ and added him to the administrators group.

I then installed DHCP on the server (associating it with 192.168.1.107 – Router NIC) and authorized it for mydomain.com so it is now running.

My goal
I am developing a paperless management system (software) for a small business. I need to be able to test connectivity to the SQL database located on the server from inside the private network and from outside the network (via the internet). My plan is to get this network up and running so my 1 client computer can connect to the server (and see the internet). Also, I need to be able to access this server from outside the intranet (but that is a different post I’m sure).

My dilemma
As it stands right now, when I go to my client computer and try to connect to mydomain.com (via mycomputer->properties->computer name->change…) I am prompted with an error, saying the DNS server cannot be found (this error returns almost immediately). Directly before I installed DHCP I tried to connect to mydomain.com the exact same way and after the timeout period had expired I was prompted with the error, saying the DNS record could not be found for _ldap._tcp._mscd.mydomain.com. However, this record exists on my server…

Finally
So then, I ask you all this, what am I missing? Is this a common problem, because I am having trouble finding solutions when digging through forum posts. All I want to do is connect to my server from my client and still have internet access. (It should be noted that the router needs to stay where it is in the connection chain and must stay as a DHCP server).

Thanks to all for any assitance you can provide!