To add/remove counters, change the following files 1)perfwins.c -- CollectPerformanceData 2)winsdata.h -- define counter symbols 3)winsdata.c -- add/remove from DATA_DEFINITION structure 4)winsctrs.h -- add values of counters 5)winscnts.ini -- add name and help symbols Contact Hon-Wah to extend the range of counters and have the counters be put in the registry. install wins