We have a wireless router that we use to share our broadband connection. I want to create a wireless network with a seperate router so only i can access the new network. some day i'd want to be able to wirelessley bridge the connection so i could have broadband on my network that i'm trying to create now. Would i be able to do this if the router i bought had two ariels?

You can do this, but I don't see why you would want to. To accomplish this set the first router, the one connected to the modem, as the gatway router. It will put the gateway IP address from the modem and serve it via DHCP to your LAN. This second router need to be set as "router" not "gateway" to serve you computers on the seondary LAN/Router. Which routers are you using and which is the primary (connected to the modem) and which is secondary?