Hi again Soozie - well, if you are using the iPad's rear camera (keep in mind that this is only a .7MP camera so rather poor resolution for still images), your images are stored in the 'Camera Roll' of the device's 'native' photo app - the newest version of the app comes w/ iOS5 which is the most recently released 'mobile' operating system for the iPad (also iPod & iPhone) - to check your version, open 'Settings' on the iPad then 'General -> About'; the version of your iOS will be listed there.
Unfortunately, the 'native' Camera Roll does not allow for much 'exporting' of your images, e.g. does not sync back to your computer - your main option w/ that app is to email single or multiple images to yourself and then save them to your computer via the emails - rather cumbersome, especially if you have a LOT of photos - but will work! To use, select the small icon in the right upper corner of the 'Photo App' (the one w/ the arrow emerging to the right); this will bring up a drop-down menu w/ the options given.
A much better way to get your 'Camera Roll' images to your computer is to use a third party app - I have PhotoSync (a $2 program from the Apple App store); if interested be sure to purchase the iPad version; you will then have to go to their website and via a free download, put a small program on your computer - more information HERE; the latter will create a sub-folder in your Windows VISTA 'Pictures' folder named PhotoSync.
Now if you do buy PhotoSync and also install the computer program, then you just need the iPad & your computer on the same Wi-Fi network; open the app on the iPad and go to your 'Camera Roll' - select one or multiple images from there and then press the little red sync button in the right upper corner; a drop down menu appears, just pick what you want to do (e.g. Sync Selected images) - this will bring up a little dialog box as to 'where' to transfer the chosen pics - just press 'Computer', select your computer, and in a short time the images will have been transferred to your computer - press the 'Camera Roll' that appears on the bottom taskbar and your PhotoSync sub-folder will open up w/ the images!
This took me much longer to type out than to do - just seconds once you get the hang of it!; Below is a 'screen capture' I did from a transfer showing photos that were in my iPad's 'Camera Roll' (recent trip to Nantucket) and are now on my VISTA laptop - click to enlarge and look in the left hand listing to see 'where' these images are stored.
Hope that this may help - there are certainly other possibilities but this is an easy solution - good luck and please post back if you have further questions?