|Dont know about servers.|
But try net send?
cmd: net send /?
Download PsTools from Sysinternals
Unzip the files to your WINDOWS\System32 directory.
PsTools has included some very useful tools, like psexec.
Psexec \\IP cmd.exe
INFO: Make sure the Windows Firewall is disabled at the target IP.
Now you have a console open (cmd.exe) at the target IP.
Type in your commands.
In your case:
msg * Hello this is a test.
Happy is ONE who says I am an OttoMAN.