clipped from: answers.google.com   
ETHANOL: "I worked as a molecular biologist for years and learned that straight up ethanol or isopropyl alcohol (rubbing alc) will remove ink. I have used it on other cars w/leather seats to remove pen stains, and it didn't damage the seat at all. Still I would try it in a small area. But I guarantee you if anything will remove the stain, ethanol will. And it is way cheaper than anything else." http://www.350zforum.com/net/viewmsg.aspx?forum=technical&msg_id=3428