Is this a Trojan???

I have ZoneAlarm 2.6.362, ZA has these icons that show which programs are being used, but i've notice a change! The icons for my Yahoo Messenger and AIM now have a hand in it, like u get when u share a rescource. When i scroll my mouse over these icons it say that it is listening to a port. AIM is listening to port 5180, while Yahoo messenger listens to port 5101. Yet, I don't have a network nor sharing files/printer, which is why these icons seem odd to me in the first place. So, i've also scanned my computer with NAV (the lastest update) and the pccillin online scanner, it came up with nothing. Why are these programs listen to these ports, could it be some sort of trojan? If so, what could it be?

 

IM programs are servers, and will listen on ports. There's nothing necessarily to worry about, except for known vulnerabilities in both these IMs. For peace of mind, you should obtain a good anti-trojan package. Several are listed at Wilders' Anti-Trojan page at www.wilders.org.

The only thing that really bothers me is that you say this is a change.

HTH

Edit due to typo city

 

I got a question.... i know aim a little better than yahoo, but my aim is set to connect on a certain port, and its default is 5190. Why would it be listening on port 5180, when its not set on that connection port .... is that normal? Plus i do not allow server connection for aim in ZA. I've also notice when i just have aim ready to log on.... it pops up in the ZA as a sharing icon and is listen to that port, but i haven't logged on yet. Should i be concern with this, or am i just trippin? Also what vulnerabilities are there for aim and yahoo that i should be concern about?

 

I just wana say one more thing..... i went on another computer i have that has aim, yet when i go online and use aim with the same connection (different computer) i don't get that hand sharing. It also not listen to a port. Does this sound suspicious to u? Anyways, if it is a trojan is there any free software that is good for finding it and removing it? Cuz i don't wana be spending much money for those other anti-tojans when the free Ants 3 is about to come out.