is there an easy way to do this, or do i have to re-upload everything?
has been asked often already, please search for details.
Basically, you make a backup of your files and your database, move all files to your new host, restore the database there from the dump, edit include/config.inc.php to reflect your new mySQL database settings and go to coppermine's config and change the "target address for ecards", that's all.