But he has an NTSC console and wants to play PAL games on it. Regardless of if his system will work on an PAL TV, the games from that region will not work on his Wii. He will need to buy NTSC region games from the region of the console.
Keep in mind that, for example, Japan is NTSC, but so is North America. They are still different regions (J) and (U), so make sure you get the games from the right region, or use Freeloader when it comes out, like I suggested before.
Ahh, I just caught the part where he hadn't actually got the system yet. If that's the case, by all means get a PAL system if it will work with your TV. If the above poster is correct, just be aware than you won't be able to get 480p if the systems aren't compatible.