Security Issues - Home User Now Networked?

I'm running XP Home / SP3. All up to date. Avira and ZA free versions in use.

Long story short, my 'explore tree' now includes folders My Docs, Shared,

Guest and my personal user Doc folders. Below these, I have 'My Network

Places' expanded to MS Terminal Svcs - MS Windows Network - Web Client

Network and 'My Web Sites on MSN' ...Also unable to block IP range and port

selections.

At Dos prompt, "netstat -ab" shows misc. TCP listening/active IP's that are

all over the board. Wait 30 sec's and poof, their gone. The baytest MS are

a given, I understand......right? On top of all this, I have netbios txt

files that contain 'not normal' characters/text. I apologize if I have

posted in the wrong group area, so I'd appreciate MVP direction re: where I

should go from here. Thanks very much in advance!

Gib