If you want it to work with indexing, you'll have to get Campagnolo shifters, and derailleurs. The distance between the cogs, and the amount of pull that corresponds to the distance are different between Shimano and Campagnolo. I'm pretty sure Campagnolo make bar cons - which would probably be a lot cheaper than brifters. I don't know if you need special derailleurs or not. The newer Record, Chorus and Veloce all ought to work, but I'm not sure if older derailleurs would.

If you want to use all the cogs on the back, you'll need more than one chain ring - hence a front derailleur. I'm not sure if the componentry is more forgiving there or not.

Lots of people in the Road Cycling Forum would certainly know about this.