http header erro in iis on win2k

[rhytha]

hi guys iam newbie, i have just tried installing osc on my local win2k with iis. iam getting a http header error's. php,mysql are all confired correctly and running. other php files are working fine(eg. index.php inside insatll folder) some help plz :D

[rhytha]

Notice: Undefined index: step in E:ocsocscataloginstallinstall.php on line 18

 

Notice: Undefined index: DIR_FS_DOCUMENT_ROOT in E:ocsocscataloginstallincludesfunctionshtml_output.php on line 15

 

these are some error's iam getting whem i try to execute insatll.php