[mail function] ; For Win32 only. SMTP = localhost smtp_port = 25 ; For Win32 only. sendmail_from = me@mydomain.prg ; For Unix only. You may supply arguments as well (default: "sendmail -t -i"). ;sendmail_path = ; Force the addition of the specified parameters to be passed as extra parameters...

In your php.ini file change short_open_tag = On.

This blog post explains how to configure FastCGI/PHP on IIS 6.0 to enable per-site PHP configuration.

A possible way of providing per-site PHP configuration on IIS 7.0 is described here: http://learn.iis.net/page.aspx/208/#Per-site .

You have not told that you are using PHP installer or trying to install manually, If you are using installer than no problem, If not than try to use installer, Its best for beginners, After installing you can find the php.ini file in system32 (C:\WINNT\system32) directory, where you can make any changes...