It appears that-
You need a Free Wheel Hub.
126mm OLD spacing.
This looks decent with a good "meat & potatoes" rim/spokes combination.
http://www.amazon.com/Wheel-Master-7...c+rims+7+speed
I would have the spokes properly tensioned and you should have a "relatively bomb proof" set of wheels for normal road riding.
I built a set of wheels this Winter with these rims and DB spokes for my Hybrid and have been very happy with them for cost/performance.
Mine cost about $160-170 for parts, but my Double Butted spokes were $.40 more than straight gauge. (x32 per wheel)