Hi Curropar,
Can you go to IIS, click on the positive sign for symantec webserver, right click on reporting and click browse.
It will ask you for a username and password type your sepm username and password (leave domain blank) and then click login
see if that shows you the sepm console or if not what is the error you get.
You can also try the stpes on the following URL.
SEPM login revert to login screen
http://service1.symantec.com/SUPPORT/ent-security.nsf/docid/2008081302490248