Wii zapper on pc?

Solution
if you have any wiimotes aroundyou can get a bluetooth adapter for your pc to connect them to and then use a program called glovePIE to set up the controls. here is a link to help

http://www.instructables.com/id/Wiimote-and-Glovepie/
You can buy light guns and run mame emulators with some games that have lightgun support.

or buy an old nintendto ad get duck hunt.

or get a bluetooth dongle and hookup the wii controler to the pc via bluetooth, although i don't think any pc games are really coded for it.