Do a google search on win32 sniffer. You'll find stuff. Vague memories tell me that they're a lot of work to set up and interpret.
Might be easier to:
1) Use one of the many available tools to rid yourself of the virus.
2) Look in the app's settings and documentation to see what port they use. Or you can use a software firewall like ZoneAlarm. There's a free version that might do the trick.
3) ZoneAlarm might also give you some of this.
To see the volume of traffic, that's built in to Windows. Right click on My Network Places and choose Properties. Right click on the net connection you are interested in and choose Properties. You should see a checkbox for "Show icon in taskbar when connected". Check this and click ok. You should now see an icon in the taskbar that has two monitors - one behind the other. One screen shows blue when data is being sent the other when data is being received. If they are both constant blue, you have a flood going on.
If you don't have a router protecting your home systems, I recommend getting one, pronto. Also read the stuff over at
GRC. The stuff in there and the hardware firewall in the router will keep most of these issues at bay.
You should also update regularly from the microsoft update page. A lot of attacks come as the result of Microsoft publishing a patch. Hackers take a look at the patch, see what it fixes and then write hacks/viruses to abuse systems that don't have the patch yet.