Yeah, if they are tall and spindly they are streching for light. If you havnt already got one go out and by a compact flouresant now... Get the highest wattage you possibly can and stick it about 2 inches away from the plant. If the plant falls over then get a little stick to support it. Also get something like a PS2 fan and a 6 volt battery and let the fan blow on the plant. It should get the stem nice and strong. If the seedlings are too far gone, bin them and start again with all the right equipment.