Warcraft 3

My Warcraft 3 disc has been working fine for the last 3 months and today it just stoppd working…whenever I try to run the game or the map editor all it does is say that the disc isn’t there…all I can do is click retry or cancel. I tried cleaning the disc but that doesn’t seem to work.
Anybody have any ideas what to do?

I think there’s a program you can download that’ll start the game up for you without the disc. Not sure where to get it, though.