log on to the portal

Hi

I have installed the Portal 6.0 SP2 (version is 6.0.2.4.1.Enterprise_Portal_Service_Pack_2 and Operating system is Windows 2000)

I have created a user to login to the portal (I have disabled the user SAP*) and I can login to the portal with my new user.

The problem is that I cannot login to the portal if I try through another PC that is connected to the network. I can see the initial login page of the portal but when I type the ID and password I don't get logged in (it redirects me to the same page)!!! If I try to give wrong ID or password I get an authentication error!!

I don't think it a network problem as I can see the initial login page of the portal.

Any ideas?

Regards

Dimitris