Yes you can use a digital to add pics to your gallery.
Take the pic and then upload them to your computer.
Once that is done you should go into your photo program and "clean them up"
By this I mean crop out if there is a lot of extra speace, etc. so that when it goes in your gallery the image is the main part.
Save it again with a unique name (like do NOT just leave it as scan00001, etc. Give it a name like maslexsubtles flowers or soemthing like that).
For more directions about uploading, I refer you to this thread.
Hope that helps!
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