Ahh, I understand now.
I was always wondering why you said "routers" but only mentioned you had 1 router (2811).
So esentially you have 5 routers- 4 DSL and 1 2811.
You can use static routes and it will load balance if the links are considered the same administrative distance and cost. (all static routes have the same AD)
So to be clear your FA0/3/0 -3 are each going to your DSL routers and the FA0/0 is going to your interior LAN (VLAN 1 only?)
Here is the documentation on this:
Load BalanceThe conifgs you will need are as such:####routes pointing to ISP####
ip route 0.0.0.0 0.0.0.0 FastEthernet0/3/0
ip route 0.0.0.0 0.0.0.0 FastEthernet0/3/1
ip route 0.0.0.0 0.0.0.0 FastEthernet0/3/2
ip route 0.0.0.0 0.0.0.0 FastEthernet0/3/3
####route
back to your 10.10.1.0 network ####
####
assuming your FA0/0 has and ip address of 10.10.10.2)####ip route 10.10.1.0 255.255.255.0 10.10.10.2
Sorry such a long issue for such a small config. I guess I thought you had a tougher problem than it was.