Bianchigirll, is this Hetchins nutted or recessed? If recessed, use standard rear Campagnolo drop bolts (or one of the nice knockoffs available on eBay), front and back. If nutted, use a Campag/generic at the back, and a Scott dropbolt at the front:



Not my picture, pulled it off eBay for reference. Apologies to whoever took the photo for the unauthorized use.

-Kurt