I accidentally inserted an installation disc for Microsoft Office that was only meant for Windows Computers. My macbook does not recognize it and I can't find any way to eject the disc. I can hear the disc drive humming like it's trying to read the disc, so I don't know what I need to do to get it out. If at all possible I would like to avoid a trip to the Apple Store because it's a ways away from me and if I can work this out without going through that trouble I would much rather do that. Does anyone know how I can solve this problem? It would be greatly appreciated if I could get some advice.