There aren't any good places to "unload" comics right now... economic turmoil and the likes you know. Unless you're just looking to get rid of them and make a tiny bit of cash instead of recouping your investment and maybe making a profit, it's best to just put them in a closet or a storage unit and pass them on to your kid once she gets interested (and it's genetic - she WILL be interested).

How big of a collection are you talking about? I'm always up for an appraisal :)