I'm not sure what you mean by "user files" but I doubt you'll have much luck unless you can access the database you want to migrate with the "mysqldump" command so you can import the data on the target machine.
It also would depend on the system as to where the files are installed. Usually the database files themselves go under /var/lib/mysql on a RedHat system. For instance if I had a database called "voidmain" there would be a /var/lib/mysql/voidmain directory and the files that make up the database will reside under that directory.
[ September 28, 2002: Message edited by: void main ]