re myspleen: I'd be very happy if someone could share on myspleen again :-)
re Minisabre: Hi, welcome to the forum. Browse around, I'm sure you'll find more interesting projects and discussions around here (I'd especially recommend Puggo's 8mm and 16mm preservations and Dark Jedi's custom discs.)
Now, to your question: you do have to un-rar all parts (it is basically one rar archive split into several) and then you burn to disc using imgburn going by one of these tutorials:
http://www.afterdawn.com/guides/archive/burn_dvd_folder_imgburn.cfm
http://www.afterdawn.com/guides/archive/burn_avchd_with_imgburn.cfm
http://neosmart.net/wiki/display/G/Burning+ISO+Images+with+ImgBurn
I hope this helps :-)