And nooo we're not reffering to a buttplug!

No seriously, I bought a Wii in the UK - cause they were all out here in Continental Europe.
Now ofcourse the UK-version has 'british plug' like this:
So I need to replace the head into this one:
So for what I understand I only have to replace the top-bit obviously - voltages are no problem since the adapter can handle 230V and we use 220V out here so that's all fine and good.
But I just wanted to make sure - do you guys think I should bare anything in mind?
Or can I just like I simply stated 'cut off' the Brits-head and 'attach' a Continental-European plug onto it? (thus creating my own FRANKENSTEIN!!)
Thanks in advance guys!
- Marnix