Back to the subject, as you might have known by now the service here sucks in regards to electronics, I know way more than any of the guys at Fust, Interdiscount etc.
But if you go to the US and go to Best Buy the geeky kid there will tell you how to buy where to buy and everything (I miss it so much

)
About your problem unless you have a TV that also accepts PAL and not only NSTC. You might be out of luck on that one.
I will say, sell it, just so everyone knows! They are selling and xbox360 :bundle with HALO 3 at Jelmoly on the basement, for 549. This xbox360 has HDMI interfaces and its 200 CHF cheaper (AND NO! its not the green and gold one, but it is a special edition) I bet so microsoft can say its shareholderds, look we sold this many more xboxes because of Halo 3.
But it is still a bargain!