Can you paint wallpaper if its not vinyl and in great shape?

Answer 1

Yes you can, however, anytime you get wallpaper saturated you run the risk of reactivating the adhesive which could cause the paper to release from the wall. You will need to prime first using an acrylic bonding primer or one specifically made for this purpose. Roman Adhesives makes a product called UltraPrime. It is a low moisture primer for this type of application. Sherwin-Williams Prep Rite Bonding Primer is another great choice.

Answer 2

Yep, as long as it's well-adhered to the wall. You'll want to use a good primer like Kilz first, though.