I need an s60 application or software that can perform the function of phone memory. I mean an application i can use to back up my phone memory.

There is no such application,tunnex,but you can use Fileman file explorer to copy entire folder like 'sounds' or 'others' to your memory card.Fexplorer can be also be used to copy sub-folders but you can't copy folders with Xplore.Then,from your 'Contacts' sub-menu,you can copy or back-up your contacts to 'MMC'.As for backing up your messages,it is quite complicated.I hope this information is useful.