2 NICs in 1 Windows Server 2003 again..

I got 2 NICs installed in 1 server installed with Windows Server 2003 the server will be using as FTP and NAS. my network is equipped with firewall and both NICs will b connecting the same GATEWAY..

1st NIC
IP :192.168.0.3

2st NIC
IP :192.168.0.4

So isit possible for me 2 configure Windows Server 2003 to..

1st NIC ONLY for FTP
2nd NIC ONLY for NAS

I aware that TCP/IP filtering able to do tht by allow specific port access on a particular NIC but i’m doubtful whether isit recommended or not? is there any other better suggestion?