Converting my bike to use quick release wheels I have an activ folding bike designed by raleigh. I was wondering if I can swap the stock wheels for a wheel with a quick release? Or does the frame have to support it? 

I also read I can use a quick release skewer but on their website it said that it's not suitable for bolt on hubs. How do I know if mine is a bolt on hub? It does look like it has a bolt going through it with a nut on either side.
It's a definite MAYBE. You'd have to rebuild the "bolt on" hubs you have to replace the solid axles with hollow ones, or replace the wheels entirely. You'd not have "lawyer lips". And the existing axles may be oversize and QR wheels might not fit well, or there may be other reasons why the skewers will not clamp tightly enough on your frame.