Проверьте на ошибки! Hello Bill. How are you? I recently heard that you started working on a new operating system windows. I think your invention you made in 1981 changed the way people thought about Computers. At the time when you did your invention is very popular among people who have had the computer. But for today Computers are in almost every human being and your operating system is outdated and needs updating. So I wish you success in your work and that your new work became popular. goodbye.

Hello Bill.

How are you?

I recently heard that you started working at a new operating system windows. I think your invention which (но можно и без этого слова) you had made in 1981 changed the way people thought about Computers. In that time your invention was very popular among only people who had the computer. But today there is a computer in almost every family and your operating system is outdated and needs updating. So I wish you success in your work and I think your new work will become popular.

Good bye,

Best wishes,

Valentin