Camera too old?

Make sure that you do a format in your computer before you reinstall your card,check to see which format you require some want fat 32 others may require a different format.

This is an old post but if you haven't found your solution yet here is the solution.
The Fuji FinePix S2 Pro uses two sets of batteries one set located in the camera body grip and another set in the battery grip itself. If you are experiencing the problem you are then the batteries in the camera body are dead and need replacement. here is a diagram. Replacing the batteries in the camera body require removing the grip.
Diagram

The camera cannot be used as a card reader. You'll need an actual card reader to write to the card. Yes, it's confusing. You can read the card without a card reader, but you need a card reader to write to the card.

I had same problem,Vista/Fuji-finepix.

Go to control panel click on Autoplay, camera is under devices probably says " take no action" with red sign.click on the bar and a drop down appears,click on import to windows or ask me first,click save and it should work fine. i uninstalled the fuji software,i assume it has issues with microsoft settings.

After surfing for solutions, I tried uninstalling all the Fuji software and using Windows to pull the pictures off the camera...It worked! Card and USB were working just fine even though they came back with errors using the Fuji software.

Take out the Camera software.
Then restart the computer
Let Windows do it all by its self

Go to their website, Its a whole lot easier just to get a external card reader or use one thats built in your pc if you have one...

the only way to prevent it is buy a XD card

Fuji Finepix S7000 Zoom Memory Cards (xD-Picture Card - M Type) & Accessories The following memory cards are compatible with your Fuji Finepix S7000 Zoom. Every memory card we offer is manufactured to the highest standard and carries a 2 year minimum warranty. Your Fuji Finepix S7000 Zoom accepts xD-Picture Card - M Type cards. The largest xD-Picture Card - M Type card you can use in your Fuji Finepix S7000 Zoom is 2048MB
View all Fuji Digital Cameras

You need to Format the new cards in the camera - see the manual

Yes you can - just hit a button and all info displayed is gone, all you see is the video output