Wireless network with two routers

Hi, trying to use two wireless (Netgear) routers to create a network with internet access. I have compter 1 connected (wired) to (wireless) router 1 and (wireless) router 2 connected to my modem (and Internet). Computer 2 and 3 are connected (wireless) to router 2. How can i make this work, without using a wireless NIC on computer 1?

Cheers Tomas