Yup, looks like a Netsend command. Get a firewall. Kind of interesting that people are using scripts to send that out now. Interesting. At least the message wasn't misleading. If I would be scamming with this, I'd say
<b>"WARNING! VIRUS FOUND, must download dialer and follow instructions on how to remove it. Complete viral cleaning can take up to 20 minutes" </b>
Now THAT would be freaky for a newbie! Calling in at I dunno, $4.95 a minute! hehehe
Wow... time to go script hunting I think....