Source: geocities.com/de/busch_1990

               ( geocities.com/de)    
cd C:\
echo Und los!
NET START Messenger
::for /L %%N IN (1 1 7) DO echo BlaBla %%N
for /L %%N IN (1 1 1000) DO net send ld02s10 Mind your own business! %%N
NET STOP Messenger
pause