>>My listings are not coming up high enough in
>>the searches, and the titles of my pages need
>>to change a little. If I switch the file
>>names and pages titles and submit as a new
>>site, but leave the original pages up, will
>>I be penalized for having two versions of the
>>same site listed in the search engines?
>It varies from engine to engine. Changing
>listings is a far tougher job than doing it
>right first time. Forget Yahoo! If you've
>already got a listing there you're stuck with
>You won't actually be penalised, you've just
>got a long and frustrating job aead of you
Surely if you switch the file name and repost your site the original search engines listing will not find your site thee old"404". Changing the titles sounds like a good idea since you will have yet more keywords to point to your site.