My zencart is installed in a folder, instead of the root directory.

http://www.cheapstairparts.com/ZenCart

I have a redirect, so if you just type in cheapstairparts.com it will redirect you to the folder... but I don't want the /ZenCart to show up.

As I understand, you can edit the .htaccess file to fix this, but I have no idea how to do this.

Can anybody look at this code and help me?

Code:
RewriteEngine on
RewriteCond %{HTTP_HOST} ^cheapstairparts.com$ [OR]
RewriteCond %{HTTP_HOST} ^www.cheapstairparts.com$
RewriteRule ^/?$ "http\:\/\/www\.cheapstairparts\.com\/ZenCart" [R=301,L]