Restart Network services

I hope this isn't a repost but I was wondering if there is a way to restart network services in leopard, similar to this command in linux:

/etc/init.d/networking restart

I want to troubleshoot my connection to the router in my home, and my linux install works after giving this command, but leopard is having trouble.

Thanks

hah nevermind I found what I need

Message was edited by: Dak