you can try vxutil from cambridge. it has a built-in pinger.
http://www.cam.com/vxutil.html
but i recommend just installing the CE drivers from
www.orinocowireless.com
it has a built-in link quality tester. just fire up the ORiNOCO Client Manager.
if the card isn't recognized when you insert it just type
in "wlluc46"