Well i went searching for the XP Network Diag. Tool and ended up finding something else instead. For anyone else having a ploblem with the 'limited or no connectivity' problem where the send light won't flicker: http://www.pchell.com/support/limitedconnectivity.shtml .

Im getting ready to switch over the network cable after i transer the patch and try it. It happens after you instal XP SP2.

....Wish me luck.