1. The link you provided doesn't give any specs or tell me whether or not any cable is included with the monitor. However, if a it uses DVI and includes a cable, it will work fine. If it uses VGA and includeds a cable, it will work fine with a DVI-to-VGA adaptor.
2. Yes, you can use the same monitor for both computers by getting a KVM. Since it's an analogue monitor, you'll need to use a DVI-to-VGA adaptor on the Mac Mini, as well.