The easiest and the most convenient way to place calls from your laptop to landlines or cellphones is to use a VOIP service. VOIP means that you can use your Internet connection to call to wherever you want. In this case, Skype is the best choice because it has support to all over the world. The rates are good for landline or cellphone destinations. Simply download the software, create an account and talk free from PC to PC. If you want to call to landlines or cellphones, use a credit card and recharge your account.