Hi there
this is my first post here I have a new website I have played with my htaccess file but I have no backup for it and now it produce internal server Error I do not know what to do this the code of it please any help will be appreciated

#php_flag error_reporting 1
php_flag display_errors 0
RewriteEngine On
RewriteBase /
RewriteRule ^([0-9]+)/(.*)?$ /index.php?module=item&action=show_item_decr&item_id=$1

Thank you all...

Look at this site it has all the commands in your htaccess file described Apache module mod_rewrite (http://httpd.apache.org/docs/1.3/mod/mod_rewrite.html)
If you delete the htaccess file everything should return to normal (note to make a backup before you do it)
Is there anything in particular, why you had to change the htaccess in the first place? What are you trying to accomplish?

I have looked at this site but I didn't understand any this of this technical terms so I need a direct instructions please as I am not a technical hero.the method here is as the what is called permalinks in the wordpress blog but on other CMS.

Is it a Joomla/Mambo website? You'll need the .htacces if you're using SEO friendly pages... Let me know and I can help you correct it.