DZ4.0安装不上啊

调试环境:

Microsoft windows Server 2003
Enterprise Edition

PHP版本5.0

IIS6.0

MYSQL5.0

Microsoft SQL Server (传奇私服调试完成,并没有冲突)

现在遇到的情况是, 安装DZ论坛时提示.
Warning: fopen(./config.inc.php) [function.fopen]: failed to open stream: Permission denied in D:\discuz\upload\install.php on line 411

Warning: fwrite(): supplied argument is not a valid stream resource in D:\discuz\upload\install.php on line 412

Warning: fclose(): supplied argument is not a valid stream resource in D:\discuz\upload\install.php on line 413


Mysql使用帐户root. 有密码 赋予了所有的权限.  所使用的数据库是Mysql自带的test

请各位帮帮忙