I'm fairly sure you can transfer photos, etc, without installing any unnecessary software.
Connect your phone to the PC with the USB cable.
The computer will detect that there is an external device connected and will poss ask you what you want to do. I'm not sure what the prompt will be, it'll prob be "open folder to view files" or something similar.
Sometimes it won't prompt you, in which case, go to "my computer" (or just "computer") and locate the last drive alphabetically, it'll prob be "F" or "G".
Double click on it. All you're doing now is looking in your phone's content. There will prob be a folder called "images". When you locate the photos that you want to transfer, press the left mouse button once and keep it held in and drag it across and drag it onto your desktop. The photo will stay on your phone and you'll also have a copy on your desktop.