Thank you Graham,
the problem is that being in Italy I prefer buying from european eBay sellers to avoid customs expenses, so at that time there were no CTE, only Sainsmart. Moreover, I need two screens for my project (a billiard scoreboard), and now I got both for the price of one... if only I could make them work 
I'm late to return them, so if you could ask your friend what libraries used with his screen, I'd really appreciate. Then, if he confirms he used the original UTFT (in which case I'd like some details), or if I'll have troubles with the touch part, I'll throw them through the window!
Regards,
Andrea