Knowing SAP EP port numbers

Hi,

I have downloaded the trial version of the SAP Netweaver 2004 SP16 from the SAP download .

I have sucesfully installed the server with MAX dB as the backend Database.

Nw when i am trying to access the portal,

http://ctsw2kadvsvr:50000/

i get Page not found.

How can i come to know if this is the right port number.

Where or in which file can i find this information about the port numbers

Regards

Manoj