there is a way to do that and I did all those with XS++ on CID51 phone with no problems.
however if you are new to the whole "customizing" the phone thing I will strongly advise you to read tutorials and follow all the steps explained there.
If you want to experiment, then make sure your phone data is backed up, like contacts and whatever else you dont want to lose, BEFORE you start playing with and modifying your phone, (trust me i learned that the hard way long time ago) just in case you need to REFLASH your phone in case you do something wrong.
like i mentioned learning to use XS++ is VERY IMPORTANT, so become familiar with the program what it does.
some people like FAR MANAGER because of it "explorer like" look (drag and drop files from one window to another) but I only use it to backup FILE SYSTEM (FS) and when i get unwanted results, i flash FS to my phone and use XS++ to upload the backup i made back to my phone, restoring EVERYTHING but GAMES and APPLICATIONS content i originally had.