Hi,
the video gives you a step by step tutorial how to replace the cylinder gasket of at yor Peugeot with the 1.4l TU3 JP engine. A broken head gasket is a rather typical failure of this engine. Most times you'll find cooling liquid in the oil, oil in the cooling liquid, or the engine is loosing oil a the right front side:
http://www.youtube.com/watch?v=4cgGA9Rb0fA
The video has a German soundtrack but English subtitles are available at YouTube. If you don't see them by default, watch the video directly at YouTube and press the subtitle button below the frame.
Enjoy it,
Jürgen