can some 1 please advise

hi my first post so hope its right and in the right place!!!i have a nds lite and have just brought a r4.iv just downloaded 2 games and extracted the files and now have 2 files on my desktop that are 1 for each game...it says they are nds files.my question is prob a stupid 1 so answer it like I'm a 2 year old please lololdo i just put my mem card in the card reader and drag the 2 files on to it or do i have to do something to the files before i can use themby the way the files needed to run the r4 have all been put on there by the person i brought the card fromthank you for taking the time to read this

ok thank you for your replyas for the proper english,i doing that at work as well and they say the same loltext messages have a lot to answer for :D