I created a network like you said
Not quite... "join" a wireless network. Big difference:
Open Airport Utility, select your Express, click Manual Setup, select the AirPort pane, and in "Wireless Mode:" select "Join a wireless network".
Do that.
Walkzinho wrote:
is there a way to create a network, pick up my internet router's connection wirelessly and then transmit it through the network ive just created or am i stuck with hard wiring it in?
That's asking too much. Your AirPort can create a new network, extend an existing network (Apple Base Stations only), or join an existing network (any kind).
In your case, the latter choice is the appropriate one.
From the AirPort Express FAQ:
Question: I have a third-party 802.11b/g/n wireless access point. I want to put AirPort Express next to my home theater and stream iTunes to it. Can AirPort Express join the third-party network?
Answer: Yes. AirPort Express can join a third-party network in client mode, or if it is connected via Ethernet to a LAN port on the non-Apple wireless access point.
This KB article describes how it works: AirPort Express: What is client mode