xlink kai fools the xbox into thinking it's on a local lan ( like in your home ).
http://www.teamxlink.co.uk/ is where you can find it. download it for whatever OS you have.
you can also download it for you XBMC dash!
when you run it from your xbmc dash it's nice and handy if you don't have the PC near by.
I choose the regular dash, gives me the same options and if I'm hosting I can kick or ban people.
once you download xlink, install and run the config for how you want to run it ( PC or XBMC )
for PC choose option "normal pc user"
for XBMC choose option "engine only (for dashboards"
then run Xlink, if it's on dashboard mode only the engine will show up in the icon tray
if the pc user option is on, you'll see the window for it.
anyhow, check with the faq in it and portforward the port you're using for it, and check any firewall settings you may have.
have fun,
BOOST