Problems:

[one] I've installed PHPnuke on my pc (WinXP on ix86), when I try to create a superuser don't happen nothing, my browser reload always admin.php with this message: There are no Administrators Accounts yet, proceeed to create the Super User.

[two] Wheh I click on every link of my site, I've an error message: Sorry, you can't access this file directly...

Can you help me?
Thanks.