changing brake pads

I shall be changing the brake pads on my 197 shortly. Two quick questions if anyone knows the answer...?
1. Does changing the pads require some sort of key for the Brembo's (I assume it does)?
2. If that is the case does anyone happen to know if the key for the Brembo's on a Megane 230 will work on the 197 as my flatmate has one from when he did the pads on his old 230...?

Cheers
 
I found it easiest to loosen the calliper bolts (12mm allen key) as my discs had a slight lip that made it hard to slide the pads out