The quickest and cheapest way to attach a rack to an eyeless frame is to use P-Clamps. They also mean you don't have to worry about taking a torch to your frame's paint.
Ortlieb/Tubus makes some that are stronger than hardware store p-clamps.

I can't find an image of the Tubus clamps. Wallingford carries them here. They are about $8.00

These are hardware store P-Clamps, they cost a dollar or two.