I need help

I got my DS hacked for me and I want to download more games.
I tried downloading Animal Crossing, but it came up as a file and not a folder.
I'm using a USB stick to transfer the data, and I'm downloading from this site.What am I doing wrong?
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anyone??

you need to be more patient, people don't sit waiting for questions. You need to download and install winrar from www.rarlabs.com then follow the tutorial in the tutorials section to extract the rom from the rar file.