jafo33,
Most of the time your ports are just being probed for open shares. (Especially if you have Broadband. Most people do not probe Dialup accounts.)
When you have Viruses trying to get into your system, it is a person with an infected computer who does not even know his computer is doing this.
Then there are the hackers, actively trying to hack into your computer. If the hacker is any good, then he would have hacked another computer and from there launched his attack against yourself. So going back to the place the attack was launched from will only lead you to a poor unsuspecting person, that did not even know his computer had been hacked.
If you are worried about the attacks, I would switch from a software firewall to a hardware firewall. Remember that your software firewall that you installed is also available on the shelf at your local software store for hackers too. Since they have access to the program itself, they can get around it and break in, if they really want into your system. (Chances are, most hackers are not going to spend all that time and energy to get in your system, they are going to go after a large corporation's servers or government/military servers.)
Take Care,
Richard