I received a couple of queries about where the TOCS information could be obtained on-line, request for copies, etc. There is web page that has everything, including links for downloading drivers that use the Pentium undocumented performance counters: http://www.das.harvard.edu/users/students/Yasuhiro_Endo/p5.html --Terry tmm@mcci.com tel: +1-607-277-1029 fax: +1-607-277-6844