Is there any AutoRAR\PAR software available?

nopes, something less fancy (mine is a command line program)
https://github.com/ShantonuM/autoRARer

There's also Chimaera's Simple Unpacker, too. http://filesharingtalk.com/threads/4...loaders-To-Use Adding the link so people can grab all of this kinda stuff in the same general area. :D

Nice work, shantonu! Haven't grabbed it, yet, but I'll be havin' a gander at it, soon. :)