The carpet is the basic (probably commercial) kind.
yes and no. just like you can paint over wallpaper. but if you want a good job pull up the carpet.
Probably not a good idea. Physically it can be done, but I don't think you would be happy w/ the results and it would most likely crack. Carpet comes up very easily, why bother?
If the Carpet is a very low pile (like the glue down tiles) I suppose you could install it over the top. With that said, I would not do it. Tear up the carpet and install the floor properly.
Even with VERY thin carpet under Pergo, you won't be happy, the floor will feel very unstable and squishy when you walk on it, the boards will click and crackle, and you will void the warranty on the Pergo. I know it is trouble, especially if the old carpet is glued down, but do not do it. If you REALLY can't get the carpet up, you will have to put down another plywood sub-floor over the carpet, and then install the Pergo on that. Good Luck.
