Newbie Needs Help Unraring and Deleting

Hi, I'm a real newbie and seem to be having trouble figuring out how to setup Hazel to scan a folder and its subfolders for RAR files, extract them all, and then delete the RARs so that only the extracted file remains. What rules, exactly, do I need to create for this? It seems so simple, but a lot of what I see here is terminal work, which I have to confess I have no clue about.
Any help would be greatly appreciated, and thanks in advance!
Any help would be greatly appreciated, and thanks in advance!