You can get a memory card reader from any tech store. once you have that you move the pictures on the phone to the memory card then move the card from the phone to the computer. Now just move them from the Card to the Desktop and your done.
If you would like to transfer your photo's via a memory card to your computer you must insert the memory card into the proper slot and power on the phone. After powering on the device go to the file you would like to transfer from your phone to card, press options or menu and then select transfer.
The Mini-SD card in your phone, comes with a larger adapter card that plugs into your card reader. If you can not locate it, you can purchase one at most major retailers. With the adapter, you can easily navigate to the card to retrieve your photos on most computers.