joomla xampp to webserver

recently i made a homepage for a friend of mine using joomla as a cms and the powerful gallery2 image gallery ... right now the site is working on a xampp-based environment on my computer and i have to port it onto a web server (ISP)

i don't have to be a prophet to know that there will be some problems during this procedure ...

here is the way i want to do the port ...

1. export the mysql-db to a dump-file (joomla + gallery2)
   
2. import the mysql-db on the mysql-server from the isp (joomla + gallery2)
   
3. transfer the directories to the isp
4. customize the configuration.php - file

... that's the plan ... let's see what happens

issue 1 - pictures, css, js files gone!?
issue 2 - gallery2 errors