Question : Problem: Point to Point T1 with Cisco 1840 routers. Please help with configuration.

I have two offices connected with a point to point t1
I have the two routers installed and I have configured the interfaces as follows:

router1

Lan0/0 10.0.1.17 255.255.255.0
Ser0/0/0 10.0.0.1 255.255.255.252

ip route 0.0.0.0 0.0.0.0 Lan0/0

router2

Lan0/0 10.0.1.18 255.255.255.0
Ser0/0/0 10.0.0.2 255.255.255.252

ip route 0.0.0.0 0.0.0.0 Lan0/0

router1 is on a network with a domain controller.
router2 is on a network with no domain controller.
I would like all the clients on router2's network to use the domain controller on router1's network.
This is supposed to be a simple connection. What am I missing?

Answer : Problem: Point to Point T1 with Cisco 1840 routers. Please help with configuration.

You do not need or want to bridge. If you bridge across a T1 you will see a huge performance hit.

Modern windows is set up to deal with routing just fine. The 2 LANs should be on separate subnets. The default gateway of the clients should be the router interface address. The comain controller should be running DNS, set the DNS for the clients to the DC and everything will work fine.

Based on the addressing you proposed initially, but modified:
router1
Lan0/0 10.0.1.1 255.255.255.0
Ser0/0/0 10.0.0.1 255.255.255.252

router2
Lan0/0 10.0.2.1 255.255.255.0
Ser0/0/0 10.0.0.2 255.255.255.252

you would have a static route on router 1:
ip route 10.0.2.0 255.255.255.0 10.0.0.2

and on router 2:
ip route 10.0.1.0 255.255.255.0 10.0.0.1