Shields Up test

Using NIS 2010 17.7.0.12

Vista Home Premium 32bit with Vista SP 2

Dell Desktop with DSL modem, no router

 

Ran Shields Up test and came up with some concerning results. Can anyone let me know what I can do to make this more secure? Are there any actions I can invoke with NIS 2010?

 

File Sharing test showed:

Your Internet port 139 does not appear to exist!
One or more ports on this system are operating in FULL STEALTH MODE! Therefore, only an attempt to connect to a nonexistent computer results in no response of either kind. But YOUR computer has DELIBERATELY CHOSEN NOT TO RESPOND (that's very cool!) which represents advanced computer and port stealthing capabilities. A machine configured in this fashion is well hardened to Internet NetBIOS attack and intrusion.
 Unable to connect with NetBIOS to your computer.
The attempt to connect to your computer with NetBIOS protocol over the Internet (NetBIOS over TCP/IP) FAILED. But, as you can see below, significant personal information is still leaking out of your system and is readily available to curious intruders. Since you do not appear to be sharing files or printers over the TCP/IP protocol, this system is relatively secure. It is exposing its NetBIOS names (see below) over the Internet, but it is refusing to allow connections, so it is unlikely that anyone could gain casual entry into your system due to its connection to the Internet.
 Several of your private names are being served up to the
Internet by the Windows networking system. (see below)
While it's unlikely that this information can be exploited, you
should know what anyone can learn about you and your system.
 
         
  — Your User Name
  — Your Computer's Name
  — Your Workgroup
 A Next-Generation PRIVACY THREAT is present!
The Media Access Control (MAC) address of the network interface card in your computer can be easily read by any computer or web server on the

Common and All Ports showed as stealthed

Ports 3389 and 49152 showed open

 

Most concerned that my User name and MAC address is vis1ble

Is there anything that I can set in NIS 2010 that can change that?

Even though such information is visible, I'm still protected from infection/intrusion/danger by NIS 2010, right?