If the limitation you are running into is a limit on the size of file uploads on your system, you may be able to increase this limit. By default it's usually 2M or 8M. To increase it you need to change PHP settings. You can change these settings either system-wide (if you have permission) or locally. The settings to change (with their typical defaults are):
post_max_size = 8M
upload_max_filesize = 2M
You must ensure that post_max_size is the same or larger than upload_max_filesize.
* These settings can be changed globally by changing them in your php.ini file (its location varies depending on your system). After changing the settings, remember to restart your web server.
* You may be able to change these settings locally if you're using Apache by putting a ".htaccess" file in phpMyAdmin's directory. The contents of the file should be:
php_value post_max_size 20M
php_value upload_max_filesize 20M
Change '20M' to however large you want it to be. You shouldn't need to restart the web server for these changes to take effect, but if you start getting Internal Server Errors (500) then this probably means your host does not allow you to change these settings and you need to remove those settings.
//For kloxo: php.ini location for phpmyadmin is
/usr/local/lxlabs/ext/php/etc/php.ini