Mac and PC using one Keyboard, mouse and display. What do I need to get?

I have decided to build a new gaming PC and I'd like to have my Macbook Pro (current gen) and the PC use one keyboard, display and mouse. I know to have two PC's do this I would just need a KVM, but since Mac's have Mini Displayport instead of DVI/HDMI/Displayport (full size) and use keyboards with special function keys I'm not sure what to look for. Anyone have any idea's?

I will probably use a Dell U2410 for the display, but if it works with PC's and I come into some money I might get a Apple LED Cinema Display.