192.168.1.###
those numbers listed on your router there, each one identifies each computer/console/whatever device that uses net on your network.
you have to check to see what your comp is.
network sharing center > local area connection > details > (IP4 #)
then for everything you port forward on your comp, you have to use that number as the IP you are forwarding to.
resetting modems and routers can sometimes reset these numbers. depending on the kind of net you use. so rechecking that IP4 and updating it on your forwards is needed sometimes.
im at my friends house here. 4 guys use several computers and phones and xboxs and stuff.
when i plugged my comp in, i was given 192.168.1.112, being that i was the 12th device to use its net.