There are some things to consider here. I bought a US Wii and moved to China, so I'll let you know what I did and what I've encountered since I moved here.
1) The Wii power adapter is not universal so you'd need a power adapter in order to plug it into the wall. I actually bought a universal power adapter (110 - 240v) because I was too afraid to plug my Wii (or XBOX 360) into a wall power converter. Here's what I'm talking about (this isn't the site I got mine from, it's been 7 months so I don't remember the exact site, I'll update this answer later if I happen to find it) http://video-games.become.com/110-240v-ac-power-adapter-with-uk-plug-for-nintendo-wii--compare-prices--sc867752236
2) The games you buy in Europe WON'T work in your Wii, but you can MAKE them. I find European and Japanese versions of games all over the place over here and they are so cheap - I finally decided to soft-mod my Wii. I went to http://www.wiihacks.com/ and found some GREAT tutorials and there are many knowledgeable people who help out. I felt very comfortable modding my Wii (and i figured, even if i happen to screw my Wii up - I still had a 360 to play and I could always by another Wii in the future). Soft-modding the Wii to play other region games was super easy and it only took around 4 hours to get everything the way I wanted it. Now I can play games from any region and I even have the homebrew channel and have downloaded some decent FREE games.
I'm going to be living over here for a short while, so I figured it was worth the risk/trouble to bring the Wii with me and figure this all out as I went along. . . and I'm glad I brought it. The power cable I bought works perfectly and like i said before, I can play all the games I buy over here. I actually have more trouble wtith my 360 - i did the same thing and bought a new power cable instead of using a wall mounted power converter...but the 360 is much harder to hack (and I don't want to risk bricking it) so I'm confined to games I brought from America...also, XBOX live is blocked in China :(
I have found some stores thru Amazon.com that will ship video games internationally. I'm sure there are MANY MANY more that will ship to Europe than China - so even if you don't want to hack your Wii you can always buy games from a store based in the states and have them shipped to Europe. I like buying games from Amazon anyway because they are usually much cheaper. The same with gamestop.com - again, they are more likely to ship to Europe than they are China....
I'd say all you need to do is get a new power cable and you're set. You want one that says 110v - 240v & 50/60Hz on it. You can either buy games online like I mentioned, or hack your Wii like I did.
Hope this helps :)