How do I ping?
 

How do I ping a server (either the IP or just the web address) and return how long the ping took?

You can run ping.exe using nsExec or ExecDos and to parse output.)

code:
ExecDos::exec 'ping.exe -n 1 nsis.sourceforge.net' '' 'stdout.log'

Pop $0 ; return value process exit

Another way is to write a plug-in, attached C (nsi extension used because of the upload limitations, just rename) code I used long, long ago (Win9x compatible).

Thanx Tahkir, you saved my life!