First time owner-Black water tank clogged....help!

Man, all of you guys are great and really helpful and full of some great suggestions. I appreciate it allot, really. I havnt been able to get to it as I'm broke and working long hours and get home well after dark. I'm going to dive into the belly of the beast on saturday. Not sure which method I'm going to use yet though. I will report back on how much fun I had. Thanks again guys!