[Highland Park] Gas company switch

Good afternoon. I seem to recall this discussed on this listserve a few times, but I cannot find this in the archives. I am looking to "shop" for a cheaper gas rate and "choose" a gas supplier that is more "green". How does one go about doing this? I seem to recall a universal web site to compare rates. Can anyone help? Please reply to me and I'll post replies to this email.... FINALLY, I am STILL trying to find a reliable person to shovel/snow plow my driveway when it snows in the winter. I would do this, but it is difficult to do when juggling our toddlers. I pay top dollar. Willing to invest in a teenager to earn extra money... Let me know. adam