only information needed then is an IP address for you, an IP address of the machine you will send everything through (the gateway...to the internet) and an IP address for the machine that will convert other computers IP addresses to names, a DNS server.
using DHCP will abstract this craziness from the user. set your windows box to DHCP for this. or get a DHCP client and run it on the network. should flood to 255.255.255.255 ('cause it doesn't know where it is, does it?) and get a response from a DHCP server if there is one listening.
This post has been screened by FOX News for authenticity and impartiality, and has "terror-proof" protection for her pleasure.
No probably about it you need the key. Its connecting because it dosen't have a hardware block on your laptop (mac filtering) but its being stopped going any further by the router once the connection is made.
Most people would have DHCP enabled on their router so the key is all you need. There is no way around this save trying to hack the key and if its 128bit or more you have your work cut out.