5
Try and login to
yoururl/user.php
if you can, then you can go to or type in:
yoururl/modules/system/admin.php
then under system admin choose Modules and click the package to the right of system.
If you can't login turn on debug (in common.php, you can do a search on the forums for more info)
also post back with more detail of your set up...
GL,
Trip