how to define route

no both are different... i have two Ethernet cards one has IP address (local) and the other one is without IP(internet) but my it goes directly to internet... in windows i defined routes so i was able to use both networks at one time. hope you understand my problem details for my network is given below: IP address:10.64.99.11 Subnet MAsk: 255.255.255.0 Gateway : 10.64.99.1 DNS Server : 10.202.103.5 hope you understand my problem