Knackered Bottom Bracket

miche is ISO taper, as is Campy, take a look here http://www.sheldonbrown.com/bbtaper.html

shimano is JIS ..

so if the BB is JIS the cranks will sit further out

If you install an ISO crank on a J.I.S. spindle, it will sit about 4.5 mm farther out than it would on an ISO spindle of the same length

you'll have to just see which one, by experimenting gives you the desired 42mm (i assume it's 42mm) chainline. that means you'll have to measure it too.