Umm ... the above code is not correct.

I forgot about using square brackets in the forum.

Here is the correct code.

Just substitute the bolded "{" and "}" to left and right half square brackets:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ({^/.}+).html$ /cgi-bin/fatbomb/fatbomb.cgi/?skin=skin6&keywords=$1 {L}

DO NOT change any other brackets, otherwise the code will not work correctly.

Apologies for not checking the code after posting until now. :0