NAK errors and port settings

[spinmagiic]

i use winxp on a fast system, and a siemans router. I do not have the NAT firewall on the router enabled. I have disabled the XP firewall. i have zone alarm plus and attempted to set up shoutcast as a trusted site with access to ports 8004 and 8005. i have also attempted using the 666 port for the yp serv. i still recieve the nak errors from the gui and i have no idea where to go from here. I also attempted to connect without the router in line and same thing.
i have used shoutcast before on win98 and had few problems. After i installed xp and the router, the system just will not connect.
please anyone with an idea let me know....im considering drinking again if this dont get fixed....

thanks in advance