Can i remove the write protection on a hdd camera?

I want to know if the write protection on a HDD camcorder can be removed. For example i have a sony dcr-sr55e and when i connect the camera to the pc and try to do anything with the videos on the hdd exept copying it doesnt let me. So basicaly the hdd in the camera can only be used by the camera (writind, deleting, copying). I would GREATELY apreciate any help!! Oh i forgot to mention that the memory stick's that i put in the camera canot be touched when the cam is used as the memory card's reader. If i put the memory card in my psp it works (i CAN put stuff on it wrom my psp but not from the cam).

Sory for my bad english but i am bulgarian and sory for not making sence at the end but i'm sooo sleep deprived trat i think i'm going to faint so i better post this soon....

AFAIK no camera/camcorder allows you to edit the images/vids on the camera HDD/SD Card,etc. You need to copy it to PC then do the editing. However, some cameras let you save/copy a finished file on to a SD card,etc.