Should I delete the following things

Hey Major Geeks, I have been advised to delete the following items if they are not useful to me. Could anyone tell me what their function is, and whether deleting them would speed up my PC. Also how should I go about deleting them? Thanks.

C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\Program Files\Bonjour\mDNSResponder.exe
c:\APPS\Powercinema\Kernel\TV\CLCapSvc.exe
c:\APPS\Powercinema\Kernel\CLML_NTService\CLMLServer.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Google\Update\GoogleUpdate.exe
C:\Apps\Softex\OmniPass\Omniserv.exe
C:\Program Files\Common Files\Ulead Systems\DVD\ULCDRSvr.exe
c:\APPS\Powercinema\Kernel\TV\CLSched.exe