i get this when i run admin/install.php my ohter php sites work.. btw why is it trying to call C:\php4\pear ?? my php folder is C:\php ...

im useing php 4.3.4 , MySql 4.0.14 and running Windows XP sp1 IIS 5.1
Warning: main(c:/inetpub/wwwroot/ugeavisen-ribe.dk/sog/includes/config.php): failed to open stream: Permission denied in c:\inetpub\wwwroot\ugeavisen-ribe.dk\sog\admin\install.php on line 17
Warning: main(): Failed opening 'c:/inetpub/wwwroot/ugeavisen-ribe.dk/sog/includes/config.php' for inclusion (include_path='.;c:\php4\pear') in c:\inetpub\wwwroot\ugeavisen-ribe.dk\sog\admin\install.php on line 17
Warning: main(c:/inetpub/wwwroot/ugeavisen-ribe.dk/sog/libs/auth.php): failed to open stream: Permission denied in c:\inetpub\wwwroot\ugeavisen-ribe.dk\sog\admin\install.php on line 18
Warning: main(): Failed opening 'c:/inetpub/wwwroot/ugeavisen-ribe.dk/sog/libs/auth.php' for inclusion (include_path='.;c:\php4\pear') in c:\inetpub\wwwroot\ugeavisen-ribe.dk\sog\admin\install.php on line 18
Fatal error: Call to undefined function: phpdighttpvars() in c:\inetpub\wwwroot\ugeavisen-ribe.dk\sog\admin\install.php on line 20