blackhole rar file

hi
thinking of changing my image & would like to try the new black hole 1.77 backup file this file is a rar file how do i change it to usb so i can put it on my usb pen
Pat
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how do i i use winzip to extract the file in dumbo terms please as i have tried for hours & all i get after extracting is just two files there is no boot file
what am i doing wrong or is there already a usb version of this file available to download
Pat