Setting outbound route for specific extensions

Hello

I have a FreePBX installation that hosts multiple customers. One of my customers does a lot of short term dialer type traffic that is causing me to incur surcharges with my carrier, so I need to send all of their outbound traffic to another IP address – so essentially, I need to figure out how to direct outbound calls for just a few extensions on my FreePBX installation to use a specific outbound route, and everything else on my FreePBX installation should use the default outbound route.

How would I go about doing this?

Thanks!

Extension Routing module will do this for you. Wiki here on the module. http://wiki.freepbx.org/display/FPG/Extension+Routing

That did it, thanks!