Do you know any software to dial and attend calls from PC connected to the mobile phone via USB ?

I have my Mobile connected to the PC via USB , its a Motorola L6 and I need a software to dial ,attend , sms from PC to communicate with the mobile . The Software must use the System microphone to answer the call in the mobile phoneDo you know any software to dial and attend calls from PC connected to the mobile phone via USB ?Yes,there are many software through Google search engine. Best software from website like skype.com,phonewala.com etc.