pied piper,
"I can not remember the urls though"
B*****ks!!
Actually the following site
'Sheilds Up' explains all this and can also show you how vunerable your PC is on the net without protection of a firewall.
Try 'Sheilds' up first if you don't already have a firewall. Your in for a shock!
Those of us who do have firewalls

, try the 'Leaktest'. Again prepeare to be a little shocked!
OzPax1