I'd advise not allowing someone to post to FR on your own computer. If they see two posters from the same ISP, they're liable to think that it's the same person posting under two different screennames. That gets dealt with very harshly around here. You're lucky you didn't get banned as well.
When you share computers and people get the bug, hard to NOT use the same computer. I suggest a grant program so we can be given money by you and others to buy another computer. LOL.