> I downloaded the later versions of LUA from your website, (5.0 and higher) > but it's a "GZ" file and windows 7 won't let me open it, Is it not usable on > windows 7 or should I use a program like notepad to open it? As mentioned in the FAQ http://www.lua.org/faq.html#1.1 , Chapter 1 of the book Beginning Lua Programming contains detailed instructions for downloading, building, and installing Lua. It includes a section on "Dealing with Tarballs and Zip Files": http://media.wiley.com/product_data/excerpt/71/04700691/0470069171.pdf