Sound I'm getting somewhere now, thanks for all of this help..

I have installed the files etc... and set the tables up and now come to the .htaccess file

My admin folder is called "this admin" and my shop folder is "automotiveshop" but when I modify the code I get an Internal Server error.......

So is this right ?

# ONLY rewrite URIs beginning with /shop/
RewriteCond %{REQUEST_URI} ^/automotiveshop/.* [NC]
# Don't rewrite any URIs ending with a file extension (ending with .[xxxx])
RewriteCond %{REQUEST_URI} !\.[a-zA-Z]{2,4}$
# Don't rewrite admin directory
RewriteCond %{REQUEST_URI} !^/automotiveshop/this admin.* [NC]
# Don't rewrite editors directory
RewriteCond %{REQUEST_URI} !^/automotiveshop/editors.* [NC]
# Don't rewrite cPanel directories
RewriteCond %{REQUEST_URI} !/cpanel.* [NC]
RewriteCond %{REQUEST_URI} !/frontend.* [NC]
# Handle all other URIs using Zen Cart (index.php)
RewriteRule (.*) index.php?%{QUERY_STRING} [L]