Networking in NT. 2 Networks/2NICS, need help configuring

[HJB417]

I have 2 network cards and I'm connected to both my college LAN and my road runner cable modem. I want my computer to use the NIC connected to my college for all traffic bound for 141.222.*.*/*.skidmore.edu (my college IP range) and use Road Runner for everything else. I tried doing some web searches and I can't get it to work. I've been using the ROUTE ADD command and it's not working.

Here's my network configuration:

Ethernet adapter Skidmore:

Connection-specific DNS Suffix . : skidmore.edu
IP Address. . . . . . . . . . . . : 141.222.142.195
Subnet Mask . . . . . . . . . . . : 255.255.252.0
Default Gateway . . . . . . . . . : 141.222.132.1

Ethernet adapter Road Runner:

Connection-specific DNS Suffix . : nycap.rr.com
IP Address. . . . . . . . . . . . : 24.57.25.176
Subnet Mask . . . . . . . . . . . : 255.255.240.0
Default Gateway . . . . . . . . . : 24.194.48.1

Interface List
0x1 ........................... MS TCP Loopback interface
0x1000003 ...00 03 6d 1a f5 21 ...... Linksys LNE100TX Fast Ethernet Adapter (LNE100TX v4) NDIS5 Driver
0x1000004 ...00 10 b5 0d e3 7c ...... F5D5000, PCI Card/Desktop Network PCI Card

what command do I have to use to make it work? I tried
route add 141.222.*.* mask 255.255.0.0 141.222.132.1
and it didn't seem to do anything.