Mysql backup

Hi all ! I know this is more of mysql issue than PHP but then i always get my problem solved here.. and hope the same this time also ... I have two systems. one with mysql-version: 3.23.37 other with mysql-version: 3.23.58 now i want to take the backup of 3.23.37 data and copy to 3.23.58 ... i know i can take backup using mysqldump command ....... and then copy using mysql commands.... but as mysql create folder for each database ..... is it possible to copy the particular folder(database) to 3.23.58 and then running it smoothly ... Any body got any idea ??? Please help me out.. Thanks in advance Binay