Thanks for the information. The hubs are 120mm OLD and 36h. I'm building up a vintage frame and trying to use as much vintage components as possible, however I'm finding vintage rims to be pretty costly. I'd like to keep the campy hubs so maybe I'll take Bianchigirll's advise and go with Sun rims like these:

http://www.ebay.com/itm/Sun-Ringle-C...item336e35ed21

Thanks again for your help!