Please help in htaccess redirect

[azshah]

Hi all I am a newbee in htaccess world need help please
the problem is this line of code in htaccess can someone explain what is it doing as I tried to understand thourgh tutorials and stuff but still cofused...

RewriteRule ^members/(.+) Main.php?do=members&section=members&content=$1 [T=application/x-httpd-php]

The problem is when ever someone logs in to the site if he goes to /members/abc.html page he is redirected to the main page or login page but if I comment this line then you can go to the abc.htl page without even logging on..
Please help me here and thanks in advance.