If you've ever wired a UK plug, you should have no trouble wiring a Swiss plug. Just make sure you buy a three-pin, grounded plug and not a two-pin, ungrounded plug. Here's what you need to buy -- they sell them at Migros for about CHF1- each:
Your UK plug will look like this when you open it:
You need to connect the blue and brown wires to the outer pins on the Swiss plug, and the green/yellow wire to the central pin. The whole job should take you about five minutes.