Yes, it was straightforward ... I think
I don't really remember, but I think I just went to http://www.classicshell.net/
pressed on 'download now' and just followed the instructions.
I don't remember any catches, but maybe keep this to hand ...
http://www.howtogeek.com/223728/bring-t ... sic-shell/
and perhaps this
http://www.pcworld.com/article/3067296/ ... ws-10.html
Good luck!