Hi, I am new to cycling, bought a used bike (low end cannondale) for a great price rode it a few times last summer and started to get hooked. I ended up getting out on avg 3 times a week and hope to really hope to increase that this year as I'm bitten by the riding bug. My question is probaly pretty silly to those of you with experience, but a friend of mine gave me some new pedals - So i attempted to switch out the old ones (for nothing more than a way to learn more about the bike) however, i found them seized. Any ideas on a good way to loosen them up. Also, is it a must that I have a pedal wrench - or will any ol wrench work. Thanks for the help.