thanks for the replys i m analysin the virus that were in each machine, i had 2 infectedan Hp pavillion and a compaq presario. both of them were afected by Backdoor VB.9.M thats the name that AVG gives to the virus. and in both of those computers the uninstall feature in TCP/IP is disable only the intall feature is enable and the properties one. i couldnt get in the internet with either one of them but i got the Hp one already online. im working in the Compaq one. i think its all related to Backdoor VB.9.M does any one knows what name does Symatec hs for that virus ? ? ?

(im not experimenting with virus anymore its a pain in the ass)