Changing the Sample Rate Of Wave File

Hey Guys I am also a coder and i want that some one help me. My problem is: I have a wave file recorded at 22,050 Hs,16 bit, mono and i want to change the format to 11,025k, 8 bit, mono. If any body can help me ?.. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform VC++,VB