[TheMamba]

First thing is that the ports you forward (screen shot) have to match the ports you're telling your BT client to use. May sound silly but some people overlook this.

As far as the ports go, try a different range as some ISP's block the typical BT ports. Search through technobabble and you'll see what ports other people are using. I'll look at my own when I get home and recommend mine.

Also, is your Windows XP firewall turned off?