Two networks in the same pc

I have two nics (eth0 & eth1) with different service providers.
eth1 is just a backup and I need that for some remote connections.

Both nics uses dhcp to get ip-address.

I would like to configure it so that eth0 is used for all traffic except few static ip-addresses which it would use the eth1

How this can be done?

Add some specific routes in YaST.

Thanks. It works fine.