How to transfer the pictures in pc through

 
 Transfer using bluetooth.
 
Open the Media application on your Blackberry to view your pictures, and open the picture that you want to transfer. Press the menu button and select "Send Using Bluetooth" (you'll have to scroll down the menu towards the bottom to see this option).

You have to have Bluetooth enabled on your BB, otherwise you'll see a warning message:

If you get this message, then go back to the main Blackberry screen and select the "Set Up Bluetooth" application. Make sure your computer has a Bluetooth adapter and has Bluetooth turned on, and your Blackberry will try to discover it.

If you need help pairing your Bluetooth-enabled Blackberry with your computer, then check out this article that includes step-by-step instructions for turning on Bluetooth on your computer and pairing it with a Blackberry Curve 8310

Once your computer and Blackberry have paired together (connected), then you'll be able to go back to the Media screen, select your picture and choose the "Send Using Bluetooth" menu.
On your computer, you may need to right-click on the Bluetooth icon in the taskbar and select "Receive File", and then choose where you'd like to save the incoming file.
Keep in mind that with Bluetooth you'll only be able to transfer one file at a time

3. Transfer using a USB data cable.
With a USB data cable you can copy all your pictures to your computer in one shot, instead of sending them one at a time like with the email and bluetooth options described above. This option is a lot faster for transferring multiple pictures from a vacation trip or night out with friends.
You'll need the Blackberry Desktop Manager software that came with your phone to be installed (which can also be downloaded here) and a USB data cable.Don't have a usb data cable or didn't get one with your phone? I've seen them at the Cell Phone Shop and Wireless Emporium and they're almost always on sale (most affordable at WE).
Once you have the software installed, connect your Blackberry with the usb cable and plug the other end into an open usb port on your computer. Open the Blackberry Desktop Manager software, choose the Media Manager option, and you'll see a Windows Explorer-like interface that will let you select the files you want to transfer.

You'll be able to copy multiple music files, videos, pictures, contacts, notes, etc from your Blackberry to your computer, or from your computer to your Blackberry.

Just select the pictures that you want to copy from the bottom view under My Devices (your Blackberry, or the memory card on your Blackberry) and drag them up to the Pictures folder in the top region of the screen, under My Media. You can also select the Folder tab and copy them into any folder on your hard drive.
Notice that the screen shot above shows the Blackberry device along with a media card that I have plugged into the Curve, which gives it an extra 2 GB of memory. I'm using an SDMicro card, and you can get one from Wireless Emporium. It'll give you enough room for an extra 1,000 photos (or about 500 songs).

I prefer the Send As Email option if I just have a single file to send over, but if I have several photos to transfer then the USB data cable approach is much more efficient because it lets you transfer multiple pictures in one shot.