If you want to add static route you need to use route command
route syntax
route [-f] [-p] [Command [Destination] [mask Netmask] [Gateway] [metric Metric]] [if Interface]]
-f : Clears the routing table of all entries that are not host routes
-p : When used with the add command, the specified route is added to the registry and is used to initialize the IP routing table whenever the TCP/IP protocol is started.
Command : Specifies the command you want to run.
add
change
delete
mask Netmask : Specifies the netmask
Gateway : Specifies the forwarding or next hop IP address over which the set of addresses defined by the network destination and subnet mask are reachable.
metric Metric : Specifies an integer cost metric (ranging from 1 to 9999) for the route, which is used when choosing among multiple routes in the routing table that most closely match the destination address of a packet being forwarded.
if Interface : Specifies the interface index for the interface over which the destination is reachable.
Examples
To display the entire contents of the IP routing table, type:
route print
To display the routes in the IP routing table that begin with 10., type:
route print 10.*
To add a default route with the default gateway address of 192.168.12.1, type:
route add 0.0.0.0 mask 0.0.0.0 192.168.12.1
To add a route to the destination 10.41.0.0 with the subnet mask of 255.255.0.0 and the next hop address of 10.27.0.1, type:
route add 10.41.0.0 mask 255.255.0.0 10.27.0.1
To add a persistent route to the destination 10.41.0.0 with the subnet mask of 255.255.0.0 and the next hop address of 10.27.0.1, type:
route -p add 10.41.0.0 mask 255.255.0.0 10.27.0.1
To add a route to the destination 10.41.0.0 with the subnet mask of 255.255.0.0, the next hop address of 10.27.0.1, and the cost metric of 7, type:
route add 10.41.0.0 mask 255.255.0.0 10.27.0.1 metric 7
To add a route to the destination 10.41.0.0 with the subnet mask of 255.255.0.0, the next hop address of 10.27.0.1, and using the interface index 0×3, type:
route add 10.41.0.0 mask 255.255.0.0 10.27.0.1 if 0×3
To delete the route to the destination 10.41.0.0 with the subnet mask of 255.255.0.0, type:
route delete 10.41.0.0 mask 255.255.0.0
To delete all routes in the IP routing table that begin with 10., type:
route delete 10.*
To change the next hop address of the route with the destination of 10.41.0.0 and the subnet mask of 255.255.0.0 from 10.27.0.1 to 10.27.0.25, type:
route change 10.41.0.0 mask 255.255.0.0 10.27.0.25
REFERENCES
http://www.windowsreference.com/windows-2000/how-to-add-static-route-in-windows-xp2000vista/