I agree with quite a few of the above recommendations. I would definetely get on the online bill paying system if you are concerned with the amount of brain space you can allocate to bill rememberance.
If you want to consolidate all of your bills I would take a hard look at
www.lowermybills.com. Thier "BillPay Plus" system allows you to input most or all of your bills and allows you to pay them electronically. It also has a niftly little calendar that shows you when the bills are due. And its. . .FREE!
Good luck with whatever system you put into effect as it is extremely important to pay all bills on time, both for you and your credit score--not to mention credit card interest.
Note: To the person who said they can take out whatever amount they want if you set up automatic bill payment--entirely unfactual. They can only take out what you AUTHORIZE--no different than a physical check except its an electronic "signature" rather than a physical one. If your bill fluctuates, then what you mentioned may indeed be accurate--but you didn't make it clear enough for me to determine your intent.