Before I get started this isn't for everyone!
The monitor I am using is an HD216D - this has HDMI & VGA inputs.
The RPi connects over HDMI. My gaming PC connects over VGA.
I bought this VGA KVM (http://www.ebay.co.uk/itm/290717435703)
which is NOT
suited for the RPi, but I wanted to share my success with the forum.
This KVM has 3 USB inputs (Keyboard / Mouse / Printer). You have to supply your own USB A to B connector cables. I have connected my keyboard and mouse to the KVM and then my gaming PC to USB1 and the RPi to USB2 (VGA inputs and output remain unused). Windows 7 loads some drivers and asks for a reboot. The RPi just worked. This now allows me to switch the keyboard and mouse between the two easily, I just have to use the monitor's built in menu to change between the outputs and use the button on the KVM when I want to switch. I know this isn't what everyone is looking for, but I wanted to share this for anyone in a similar situation to me
- one monitor, keyboard, mouse (and no spare space for dedicated peripherals). You just have to use what is available to you.