help with FFCC: ROF and changing rom names on my m3 ds simply please!

is there any way to change the name of a rom on my m3 dssimpy??
its kind of annoying having a huge title with stuff like ".nvix" or something at the end. oh, and where do i drag the new update for final fantasy CC: ROF in my m3 simply? ive downloaded the r4.window thing but i dont know where to put it. ???
thanks in avance! :)

You should just rename the rom and there should be way to change the filetypes shown like in R4. Do you mean the firmware? Just drag and drop all the files onto your MicroSD and click Yes To All once it asks you if you want to overwrite.