Set new gateway for route to internet

Hi all,
i have a rhel 6.2 with a default gateway.
This server is an Intranet office with no internet access.
DNS are already configured and it's possible to resolve my target.

My goal is to link my application (apache forward) only to http://mytarget.yyy through a new gateway (That does not have to replace the default GW), but for my application/server it must be transparent.

Or maybe there is a better way to resolve?

Thanks to all.