Hello everybody,
I'm Serdar from Istanbul, Turkey and my '07 red Corsa Sport is the number 154 here. It has been a long time since the last time I was here, but some of the early members of the forum may remember me, like Westi and Bremmo. Greetings, pals! if you are still around here, of course 
Since I bought my car four and a half years ago, I have constantly complained about it not having a trip computer (BC). It does have many nice features such as ESP, cruise control and panoramic sunroof; but lack of a simple thing like trip computer always bothered me.
And finally I have decided to change my car's instrument cluster (instrumententafel) with a new one which has a bigger display in the middle. Through my Opel dealer, I ordered the new cluster and the wiper/washer column stalk (lenkstockhebel für scheibenwischer) with the BC control buttons on it, then waited for them to arrive to the dealer, from Germany.
It was a big question mark whether it would work or not. After all, I might end up throwing my money out if it wouldn't work. Luckily, with some tricks and the great help of chief technician in my local Opel dealer, we managed to get it work
Here's the story of my trip computer adventure :
The new instrument cluster fresh out of its package :
[Blockierte Grafik: http://img690.imageshack.us/img690/689/dsc00482oe.th.jpg]
Close-up shot of the new cluster :
[Blockierte Grafik: http://img809.imageshack.us/img809/483/dsc00483u.th.jpg]
The covers are removed to mount the new wisher/washer column stalk:
[Blockierte Grafik: http://img819.imageshack.us/img819/7081/dsc00484ba.th.jpg]
After the new stalk with the BC controls installed :
[Blockierte Grafik: http://img585.imageshack.us/img585/3549/dsc00485n.th.jpg]
Last photo of my good old "armaturenbrett" before it is removed
[Blockierte Grafik: http://img803.imageshack.us/img803/7527/dsc00486x.th.jpg]
After the new instrument cluster is installed and BC is activated via Tech2:
[Blockierte Grafik: http://img705.imageshack.us/img705/7646/dsc00487sc.th.jpg]
Everything is installed, programmed and working perfectly
[Blockierte Grafik: http://img851.imageshack.us/img851/8273/dsc00489wz.th.jpg]