It depends on the wattage, but looks ok for veg, may need something a little stronger for flowering. Try and get some CFL's (sorry fdd, stand by CFL's to the end lol) there not too expensive either (thats also why i like them)
You could use them for vegging or for clones, but how efficient would they be seeing as they have been stored in your attic? Maybe replace the bulb with a new one.