I have Nagios running on a dedicated CentOS 4.7 machine, which also runs the NRPE Daemon. And I have Nagios as the Monitoring Server running CentOS 5.2 on a XP PC using VMware.
"I am unable to view the remote PC in the virtual Web Interface" = From the Monitoring PC (VMware), I can't see the remote PC through the Web Interface. But each machine can tell me what version of NRPE the other is running with the commands:
/usr/local/nagios/libexec/check_nrpe -H localhost
/usr/local/nagios/libexec/check_nrpe -H 192.168.xxx.xxx
"What checks do you want to do with NRPE? (from which nagios install?)" = Once up and running, I will be using the dedicated CentOS 4.7 machine as an Asterix PBX and so will be monitoring services etc.