2
It is possible!
Do a search and you will find many topics talk about this prob.
It is devided into 2 part: move the files and move the database.
Files: Just copy all of your files to the new location and set proper permission. Of cource you should re-edit the mainfile.php.
Database: If you have phpmyadmin, use it to export every table in your database to a file. Import it to the new database.
That all, I have moved 2 times and everything work well.