I have a new desktop and a wireless mouse and keyboard. Presently, there is no OS installed. When I turn it on, will the PC recognise that through their wireless USB sticks there is a mouse and KB, and thus allow me to proceed with installing Win7?
On most newer MOBOs YES - but you may need to go into the BIOS and look for an option to turn on USB support for both the mouse and keyboard on some MOBOs so it is best to have at least a wired keyboard around somewhere just in case so you can get into the Bios screen ! (it is usually somewhere under the advanced options setting in your BIOS.)