SNMP

Enable SNMP windows 7 - http://www.youtube.com/watch?v=2C2TC5Rw_2Y
Tutorial SNMP - http://www.youtube.com/watch?v=TiBrB0qxQao

Software monitor
http://www.filebuzz.com/fileinfo/12514/FreeSnmp.html
http://www.filebuzz.com/fileinfo/65639/System_Pulse_MIB_Browser.html
http://www.filebuzz.com/fileinfo/74337/SolarWinds_Free_SNMP_Enabler.html
http://www.filebuzz.com/fileinfo/16060/SNMP_Probe.html
http://www.filebuzz.com/fileinfo/99530/Jalasoft_SNMP_Device_Simulator.html
http://www.filebuzz.com/fileinfo/54566/Paessler_SNMP_Tester.html
http://www.filebuzz.com/fileinfo/15853/Paessler_SNMP_Tester.html
http://www.filebuzz.com/fileinfo/22572/AdventNet_SNMP_API___Free_Edition.html
http://www.filebuzz.com/fileinfo/32508/LoriotPro_Free_Edition.html