@pek, There've been several threads on this here, but the general idea is that it depends on your Network/LAN topology (does your DSL modem also route, for example).
If you're not familiar w/ your local setup but it's a setup provided by your ISP, it's recommended you check w/ your ISP's support.
But yeah, the general procedure is:
1) Forward the external port you want the outside world (WAN) to access your Linkstation Web Access on (in your case, port 80).
2) On your linkstation, in the External port box, enter 80. (This does NOT make the Linkstation's Web Access run on port 80, it simply helps when it generates links for re-directing, and how it provides data to buffalonas.com).
3) Assuming the web access is completed configured now, and your port forwarding is functioning properly based on your LAN configuration/topology, then you should be set. ---
Message Edited by rinthos on 08-30-2009 12:18 PM