Sending, sending, sending..how to stop?

[fnoguera]

After I clean my laptop from all viruses, even online ones (and I had a few), my system is almost stable again. BUT...
at the moment I connect through my WIFI to my DSL, the computer (no program running) starts sending huge amounts of info out. I'd even say the outbound speed has gotten higher than usual.
Is ther any way in XP where I can figure out where I am sending this and what?
Thanks for any hint,
Frank

[krusher]

check the taskmanager for unusual processes and also look for processes that are taking up cpu time.

Check the router traffic logs (mine keeps track of all traffic, in and out)
By knowing where the traffic is going, you can block those ports and IP

most likely you've got a trojan and may need a specialized app to detect it.

[Miz]

I'd say the easiest way to find out the source of all the activity is to install a firewall (with DSL you should be running one anyway). It will tell you what is accessing the net.

Both Sygate Personal Firewall and Zone Alarm work well and both are free.

Once installed, it will notify you the first time something tries to access the net, it will name the program and will ask you if you want to allow it out.

XP's built-in firewall doesn't do anything about outbound traffic and if you have it enabled, disable it after installing either of the above. Having two firewalls running is just a wreck waiting to happen.