I remember some people talking about this a long time ago, check it out: http://www.compgeeks.com/details.asp?invtid=TACHOMETER Software is for windoze, but I'm sure that it wouldn't be too hard to hack something up for Linux. -- Nate Carlson <natecars at real-time.com> | Phone : (952)943-8700 http://www.real-time.com | Fax : (952)943-8500