Hello rockhopper
I have a wireless network setup (Belkin), don't quote me
but if you are getting a connection via ethernet cable
you need to type in something like
http://192.168 etc etc in your brouser, which should bring up a setup page that allows you to set security for your (wireless thing) (router maybe) normally 64-bit WEP is ok then disconnect the ethernet cable and try wireless.
Good luck
maybe somebody will be along with more info
TopiToo