OK, so this sounds like a dumb question. What is the best way to clean a PowerBook keyboard? I'm not talking about gunk under/in between the keys, but rather the surface of the keys themselves. I find that after almost a year of heavy use, the oils from my fingers have made a lot of the keys (especially the right side of the spacebar where I hit it with my right thumb) a bit greasy. This kind of annoys me and I would like to clean them off. I tried a damp paper towel but this did not do much... And I'm a bit afraid to use anything else. Surely there is something safe that will work? Alcohol?