Good news, Only pre 80's Peugeots are French threaded, the one you have uses English/ISO bottom brackets.
Buy a crankset first before you're hunting for a bottom bracket, different cranksets use different spindle lengths and different types of interface. 68mm is the width for most road bikes, and length varies from crankset to crankset.
Last edited by Squirrelli; 06-27-10 at 08:00 PM.