I wanted to check out lindows but really did not want to pay for an OS that I wasnt going to keep but wanted to play with. I had seen how lindows sometimes offer a free version for a day with a special code. So I looked aournd and found out that lindows offers there devlopers version to anyone that does kde devloping.

they give you all the steps here:
http://www.lindows.org/kde
Its really simple

Nowtheres no proof required and anyone can download it. You sit in a queue for quite a while though before you can download. Also intersting to note is that you fill out the info for the devlopers version and then they let you download any version you want. But developer is probably the best since its bundled with gcc.

Id say if your really not a developer and you download lindows and like it, that you should buy it. There plenty of good free OS's out there so you dont need to get lindows either.