Computer won't recognise camera to download images
** Problem Solved **
I found it wasn't the camera entirely to blame. I tried another USB cable on another pc, and although the camera was doing the same thing as my problem, the computer recognised the camera as new hardware, and asked me how to access the pictures. So I was able to get the pictures from the camera to the computer, and then saved them on to my Kingston flash drive. So taking the flash drive to my daily PC, I plugged in my flash drive via a USB extension lead, and discovered that would read either... alarm bells rang. So I unplugged the lead, and put the flash drive straight into the computer direct. The computer recognised it immediately. So plugging in the extension lead again, and the flash drive, it read this now. So I tried the camera, and it recognised it.
So I don't know exactly what the problem was, but it was solved... saved me a lot of running around and money ;)