Can I view and control any desktop in my network with remote connection with any software? Can I take control without the permission of any users on the network?

You can view and control your desktop from any other PC/ laptop/mobile via the local network or Internet using either Windows’ built-in Remote Desktop Protocol or a third party VNC utility, but you cannot do this without setting up permissions to grant you access. The host PC should have the service installed and the client PC would need to enter the username and password for connecting to the host PC.

You can take control of any computer using any operating system using a simple VNC utility. 

What happens when we download music and movies from torrent sites? Is it illegal and piracy? If yes, is there any legitimate way of downloading movies?

It is illegal to download movies, music and software from torrents and other P2P software. These files usually contain pirated content and are uploaded to various servers for others to download and use. If the files are shareware, freeware or self-made for distribution or if the developer of the software or owner of the movie or music give the authority or permission for it to be shared for free, then these files can be legally put up on torrents and PSP sites. We strictly oppose piracy and recommend using only genuine software, movies and music. There are only a few limited websites that distribute free authentic movies, but you will have to hunt for them. Torrents and P2P sharing is completely legal unless the content is copyright-protected.