Currently Being ModeratedDec 6, 2012 11:22 PM (in response to mihalisb)
Welcome to the Apple Support Communities
You have to buy Mac OS X Snow Leopard in a DVD > http://store.apple.com/us/product/MC573/mac-os-x-106-snow-leopard
Currently Being ModeratedDec 7, 2012 8:16 AM (in response to mihalisb)
You then need update to 10.6.8 with the combo installer; http://support.apple.com/kb/DL1399
Then phone Apple Sales via 1-800-MY-APPLE (be sure to ask for sales). They'll give you a download code to use at the App Store for Lion.
Lion is no longer available directly from the App Store.
Currently Being ModeratedDec 7, 2012 8:19 AM (in response to mihalisb)
At various times there have been illegal copies of Apple OS X floating around on torrent sites.
Besides the fact that they are illegal copies, they are generally loaded with all kinds of malware.
So it is best to avoid them.