How Can I Recover Files Encrypted by Cryptowall 3.0 - Guide to Remove Cryptowall 3.0 Virus

Recently, a lot of computer users have been the victims of Cryptowall 3.0 Virus:

My Dad got Cryptowall 3 recently maybe about a week ago from an email (my guess). Most are infected some are not......

All my files are Encrypted by Cryptowall 3.0. What I want is that my PC,return to normal and all my files.I will do anything, just help me, because my job, work,life is on the edge. 

Information of Cryptowall 3.0