http://traderonlineforum.com/index.php?sho...=15&#entry49468
If your site is online, getting visitors, has PR and what-not, you MUST keep all the URLs intact. Eg: going from
www.yoursite.com/how_to_groom_a_horse.html to
www.yoursite.com/horse-grooming.php is an absolute no-no.
What software are you migrating to?
Oh, and if you don't care about any of the above, then all you need to do is login to your existing webhsot, delete the files. Upload the new files you made with whatever piece of software. Done.