Hi,
If you are getting login screen, it means you have completed the installation successfully.
As said earlier by Ted, did u use below url?
http://myportalserver.sap.com:50000/irj/portal
You will get a login screen.Login with administrator user. After successful login you will be taken to the portal.
Make sure host entry corresponding the portal is done on your local machine.
Regards,
Prem