I remember there was a command for it, but I cant remember it, and the sticky has no info 
Can anyone help me out?
Try this: http://home.wangjianshuo.com/archives/20021107_stop_net_send_spam.htm
I googled stop “net send” 
If you’re running Windows XP, type “services.msc” (without quotes) into the run box and disable the Messenger service. No more netsend spam. There are also various programs out there that can do this for you but that’s the gist of what they do?
Oops, the last sentence there should’ve ended with a period. :smack: