Cleaning plexiglass

My son, who isn't even old enough to play video games, loves our Neo Geo cabinet. He loves to stand on a stool and play with the buttons, sticks, and to watch the games. Unfortunately he also loves to put handprints on the plexiglass in front of the screen. What is a good way to clean the handprints off without damaging the plexiglass (I have no idea how sensitive it is to cleaning fluids). Zane -- -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |