Heres an update. Im still not able to setup port forwarding. It seems that the Speedstream 5200 has been altered by my ISP. Seems they loaded it with special firmware that locks the modem in a way that the configuration options available from the web interface are not visible. They limited me basicaly to a web interface with only a status, a way to change passwords and thats about it. Seems Ive located a site discribeing how I can unlock the modem to gain access to all options includeing port forwarding but at present time I have been un sucessfull.

I am greatfull for everybodys assistance and will try to keep you updated.