You can back up your db and restore it form the cmd promt, or set up a cron job to do the backup periodically.
For MySQLDump, perform the function from the mysql/bin promt.
The command is :
c:\mysql\bin>mysqldump -h hostname dbname > c:/filename.txt
Then to retore, go to the mysql promt and do a source command :
mysql: source < c:/filename.txt