I saw Windows Vista on computer behind desk at  cinema?

no, you didn't. go get some cure for your eyes. 

No, you didn't.

many shops still have operating systems like windows xp on all their tills and counters with the stores sales system running on top of the xp

Good for you!  Did you actually have a question?

Yup.  They're probably running a software Point Of Sales system that hasn't been updated for a newer operating system.

Much as we would like to read your blog, if you have a question we’d love to read it. Simply adding a question mark to a statement doesn’t make it a question.

A  question has to begin with what, when, where, who, whom, why, and how. They are sometimes called wh-words, because in English most of them start with wh-.

Cool story, bro. What's the question?