CMS Made Simple Forums

I installed CMSMS for a site with a temporary domain (.info) to test everything before switching to our real domain (.se) but when I made the switch at our webhost a big problem occurred. All the pictures and css-files seam to be linked with the old url and are therefor not working unless I keep the old domain pointed to the server.

So my question is if there is any simple way just to modify a databaseentry or perhaps reinstalling the cms keeping all the info. My last idea was to backup the information, reinstall the cms and import all the information again but I see that as a last option.

Solved using the config.php-file. (FTP did't work at first when I did the redirect)