Bottom right hand corner of the screen, next to the clock. Zone alarm
= red and yellow icon with ZA on it [turns red/green when working].
AVG = Yellow, Black, Green, Red square icon.

If both are there you should be OK.

I know of two places to test your pc

http://www.grc.com/default.htm

scroll down to "shield up " click  it
then click  "proceed" then pick " file sharing " for your 1st test

This is how my pc tested

Attempting connection to your computer. . .
Shields UP! is now attempting to contact the Hidden Internet Server within
your PC. It is likely that no one has told you that your own personal
computer may now be functioning as an Internet Server with neither your
knowledge nor your permission. And that it may be serving up all or many of
your personal files for reading, writing, modification and even deletion by
anyone, anywhere, on the Internet!
    Your Internet port 139 does not appear to exist!
One or more ports on this system are operating in FULL STEALTH MODE!
Standard Internet behavior requires port connection attempts to be answered
with a success or refusal response. 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.
All attempts to get any information from your computer have FAILED. (This is
very uncommon for a Windows networking-based PC.) Relative to
vulnerabilities from Windows networking, this computer appears to be VERY
SECURE since it is NOT exposing ANY of its internal NetBIOS networking
protocol over the Internet.

good free info and other stuff here so look around .

2nd site

http://www.pcflank.com/about.htm

This is how my pc scan on one test ...

TCP CONNECT scanning (scanned in 73 seconds)

We have scanned your computer' ports used by the most widespread trojan
horses. Here is the description of possible ports' statuses:

"Stealthed" (by a firewall) -Means that your computer is invisible to others
on the Internet and protected by a firewall or other similar software;
"Closed" (non-stealthed) - means that this port is closed, but your computer
is visible to others on the Internet that can be potentially dangerous;
"Open" - Means that this port is ready to establish (or has already
established) a connection with remote address. It also means that your
computer is vulnerable to attacks and could have been already hacked or
infected by a trojan/backdoor;
     Port:         Status            Service            Description
     21          stealthed            FTP            File Transfer Protocol is used to
     transfer files between computers
     23          stealthed            TELNET            Telnet is used to remotely create a
     shell (dos prompt)
     80          stealthed            HTTP            HTTP web services publish web pages
     135          stealthed            RPC            Remote Procedure Call (RPC) is used in
     client/server applications based on MS Windows operating systems
     137          stealthed            NETBIOS Name Service            NetBios is used to
     share files through your Network Neighborhood
     138          stealthed            NETBIOS Datagram Service            NetBios is used to
     share files through your Network Neighborhood
     139          stealthed            NETBIOS Session Service            NetBios is used to
     share files through your Network Neighborhood
     1080          stealthed            SOCKS PROXY            Socks Proxy is an internet
     proxy service
     1243          stealthed            SubSeven            SubSeven is one of the most
     widespread trojans
     3128          stealthed            Masters Paradise and RingZero            Trojan
     horses
     12345          stealthed            NetBus            NetBus is one of the most
     widespread trojans
     12348          stealthed            BioNet            BioNet is one of the most
     widespread trojan
     27374          stealthed            SubSeven            SubSeven is one of the most
     widespread trojans
     31337          stealthed            Back Orifice            Back Orifice is one of the
     most widespread trojans

Recommendation:

All the ports we have scanned are Stealthed (by a firewall). So just
continue following the fundamental security measures and regularly update
your security software.

good free stuff here to !

my pc =   Outpost firewall ( with all the neat plug ins ), avg anti virus,
spybot search & destroy and no  "Rootkits " on this pc to  bypass
firewall.

hope this  helps