your windows is the one which is not up 2 date..
anyway
update at least to XP SP1
after that update WPA stuff:
find fix at
http://www.microsoft.com/downloads/d...displaylang=en
and second fix (perhaps the first one is not necessary allthough i've installed that one first before installing this one)
http://www.microsoft.com/downloads/d...displaylang=en
and update your driver to the latest you can find here
https://wl500g.info/showthread.php?t=633