What do I need to
Hi well there are a few ways to do this...one way is to obtain a USB Video IN dongle, hook up to the camera's AV OUT and Sound OUT ports either Yellow, Video, Red & White Audio stereo out, or Green, Red, Blue, All Video, and Red & White, again Audio out.and press Play on Camcorder and "recorded" read "Saved" on PC with the DTVR, (Digital Television Video Recorder) software, and you may save it in any format required, then post process the saved video using whichever program you wish.
Another way, IF you camera allows is to use a connecting cable either USB or Firewire, also one must obtain and install the "Driver" for the camera usually this will have come with the camera or is obtainable from the manufacturers download website. Again, hooking up to a PC, and recording with DTVR software. Once again to save in whatever format MPG4, HDTV H.264 whatever. and post process again with whatever software one wishes.
Thats about it really, so you need a way of getting the signal into the PC, a way of recording the signal in, and a way of processing the saved video file. There are many programs on the 'net to do this. Simply Google DTVR digital Video recorder, video post processor. Windows Movie maker is good, some programs allow one to save and process all in one. Also sometimes the manufacturer in your case Sharp, often put out there own software for doing all this again it often comes with the camera on a DVD etc, however again it is most likely available for download from the Sharp website, if you want it.