Computer Under Heavy Attack?

Okay so i have Zone Alarm Pro as a fire wall. Maybe its just me not understanding the reason of the program. But when I opened it up this morning, it says it has blocked like 20k intrusions since install(i did a reformatt of computer about 2weeks ago, which is when i reinstalled Zone Alarm Pro). So my question to you is should i worry about this? Get some extra protection? Ignore it?

My antivirus also found 2 virus's on my comp but deleted them with ease. My computer i guess, is on a network with my brothers(though we didnt set up any shared folders or printers or all that snazzy stuff).

System Specs:

Pent 4 2.0ghz
Jetway P4x400 mobo
bfg nvidia 6200 256mb
SBC dsl
Lynksus(sp?) 2.4ghz wireless router(though our comps dont use the wireless part lol)

Sorry if i should of posted this in network or not, was torn between where to put it.

 

Yea i looked and my brothers network is there, but how can i see where the intrusions are coming from?

 

Borsung, it is quite common to see that number of intrusions I have 18,000 of those 5,000 were high-rated!!!! I seem to remember when I installed ZA, that I to was worried about the number, but did not know about MG, so just took a wait and see attitude. The number will grow over time, but it means the program is working ..Right. Switching away from MS Explorer/Outlook will help to reduce the job ZA has to do though. Windows Defender Beta2 is a great back-up to both your Firewall 7 Antivirus and is FREE from MS.

Try singing "Don't worry be Happy" worked for me when I first saw my Intrusion numbers.