France Prepaid Sim Card Traveling To Europe... Tips For Cell Phones?

Traveling to Europe... tips for cell phones? - france prepaid sim card

My family and I go to Italy, Germany and France this summer. I have three GSM phones from Cingular. I thought he would try to unlocked this phones, then buy international prepaid SIM cards. If the simple cell phone in conjunction with any other place held. How do I turn my cell phone, and what type of SIM card should I buy. Is there a cheaper way to do easier. My family and I have found a way to be able to talk to each other, while out, sightseeing, etc. Thanks!