multiple provider

[Muhammad Reza]

Dear BSD'ers

Can freebsd routing kernel do multiple provider ? without BGP ?
Now I have a (new ) ADSL, and T1 connection to different provider, my LAN is 
nat-ing behind freebsd router, 
I want  some people in my network to connect to internet via  ADSL and some 
people via T1, based on their IP. 
They said , i  can do that with linux iproute tools, but i dont want to 
replace my FreeBSD-4.9Stable router with Linux.
Please help me, any suggestion is appriciate.

regards
reza