here is a tutorial on how to upload things to phone internal memory:
http://www.topsony.com/forum/showthread.php?t=45
to see if your phone has flash menus enabled go th your themes folder and look for equalizer theme and apply it, if your menu changes, (like your those 12 icons are replaced to another layout) then flash menu work, of you still have 12 icons (your menu didn't change) then you need to enable flash menus or reflash with a generic firmware.