A link to the emulator would of been of more use
As for the file you need to extract the iso image out of the rar file
If iso is associated with WinRAR is will also extract the contents of the iso image (you do not want it to do that)
To make that easier just use 7-zip to extract the iso image from the rar instead of WinRAR
P.S.
I just edited your post to fix the link
I also moved it as Everything Emulation is for emulating on a computer, but Everything Console is for emulation on consoles as well as Mobile devices as well as other support for games played on real hardware and other real hardware issues
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