If you don't already have a .htaccess file in your root folder, create one. (You may have to create a file called htaccess.txt, upload it, and then rename it simple to
<font color='"#FF8C00"'>.htaccess</font> [dot at the front, no extension at the end].)
Inside that file, create redirects like this:
Redirect 301 /folder/oldpage.html /newfolder/newpage.html
If that doesn't make sense, perhaps head over to the Apache forum for more details.