Having Trouble with .rar files

You need to get a file compressor known as WinRAR to extract them.
NDS and GBA emulators like NO$GBA and VisualBoyAdvance won't read them unzipped as .RAR files.
So WinRAR fixes that for you!
I have the file if anyone wants me to share the install with you!

its a free download from hundreds of different places, why would anyone need to get it off another person?