yes! thanks you! that worked.. strange though, i had tried a couple of ports, higher than 7777 though.. i guess it needs to be around the 4000.. it works now so.. lol thanks!
Generally, port number could be anything in between 1'025 and 65'535, although it is recommended not going above 40'000 (as these are most often used by NAT, etc). Of course, system admins may impose further restrictions as to which ports you are allowed to use.
Also, the port you wish to use must, obviously, be free for use (no other programs listening at that port).