Sometimes you just need to wait...
@echo off
rem #
rem # Written by Ian Willis 2010-10-10
REM Launch an application ONLY if we can ping an address.
REM Loop until we do ping.set shortcut=c:\Notepad.lnk
set server=www.example.com:PING
ping %server%
if %errorlevel%==1 (
Echo "Ping failed.")
if %errorlevel%==0 (
msg %USERNAME% "Ping succeded, Application %shortcut% will start now."
start %shortcut%
goto exit)
echo+
echo+
echo+
echo+
echo+
echo+
REM This will loop after waiting 30 seconds
echo Paused for 30 seconds...
ping -n 30 127.0.0.1 > nul
cls
goto :PING:exit