maybe it was a bike like this, or a bike with Campagnolo dropouts?
You can buy a new or used rear wheel that is a clincher, wire bead that uses a standard inner tube. You should probably buy one for the front since it does not sound like you are familiar with the use and maintenance of a tubular. You could probably find a decent set of wheels with a six speed freewheel at a local shop or maybe on e-bay. The price should not be too bad since the technology is out of date, unless you want to buy a mint set of super Record hubs laced up to some Mavic open 4's.
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... 07830&rd=1