Hi Kam,
Yes, Rick is right ,you can go with PBR...
Here is the sample configuration... ( other Gurus may come with different solution :-) )
--------------------------------------
access-list 1 permit 192.168.1.0 0.0.0.63
ip access-list standard RESTOFNETWORK ( or you can use Prefix-list)
10 permit 192.168.1.64 0.0.0.63
20 permit 192.168.1.128 0.0.0.127
interface gi0/1 ( LAN Interface)
ip policy route-map PBR
route-map PBR permit 10
match ip address 1
set next-hop <>
route-map PBR permit 20
match ip address RESTOFNETWORK
set next-hop <>
-------------------------