Help

Hi everyone,
I used to get viruses as attachments from few e mail addresses.Put them in block list, informed ISP, still working on it. Norton antivirus helps to stop them b4 getting into my computer and deletes them. My problem is whenever I connect to internet a virus named w32.GAOBOT.SN is detected by Norton and immediately deletes it. I am using a dial up connection. I wonder what feature on my computer attracts the virus. OR how the virus finds my IP (because it is dial up) does this mean the virus is still in my pc somewhere sending some signals and bring the virus back? How do I escape from this? contacted ISP(no help) can anybody enlighten me with their wisdom? Thanks in advance.
Sachin

[AndreyKa]

It’s like to Trojan.DownLoader on your PC. Scan PC by any alternative scanner:
DrWeb CureIt!
ftp://ftp.drweb.com/pub/drweb/cureit/drweb-cureit.exe
Or Ewido security suite:
http://download.ewido.net/ewido-setup.exe