Just be REALLY careful. Most of the 0% deals hinge on you paying at least the minimum due ON TIME, EVERY MONTH. If you are even 1 day late in payment, they will jack your interest rates up to 20, 25, even 30%. This is called the 'default' rate and is disclosed in the fine print of the offer. Even paying ANOTHER account late can mean you are an "increased credit risk" and they cans still jack the rates. This means you must pay ALL of your bills on time to ensure they cannot raise your rates.
If you go this route, be sure to pay all of your credit cards online, via that credit card's website, at least 5 business days prior to the due date. If you rely on the mail, it may become "lost" in their mail room and magicly found...the day after it's due. And be sure to pay the rest of your bills on time too, even utilities...as many report to the credit bureaus too.