Ok I will give more details....

I have a wordpress blog in the root domain say http://www.abcd.com/ and it has its own .htaccess file and if I delete it the wordpress blog will not work.

Now, I am trying to install another script(not wordpress) onto a subfolder say http://www.abcd.com/sub/ I installed the script correctly according to the instructions and when I access http://www.abcd.com/sub/ it says Nothing found for sub.

the .htaccess file of the script i installed in the subfolder is shown in the first.

Now please help me...