Q: Superglue on imac G4 17" screen... HELP!!!

You need the special solvent that can rid you of the superglue.

or you could just lie about the condition and sell it on eBay, no wait, you just did that didn't you!

I have heard that WD-40 will remove super glue from lots of things, including human skin. I would recommend (1) turn te compter off, (2) place it screen up on a flat surface, (3) try a little on a Q-Tip (4) in the corner of the screen to be sure it does not damage the surface of the screen, and (5) if not, proceed with caution, (6) dab it on the glue using very little pressure. It may take several applications.