when i am connecting the internet to my network card (in my laptop the network card is build-in) nothing happens it shows that there is nothing connected to the net card. what does this means? COTOMAN

You have tell the card which wifi to connect to... There will be facility (part of the wifi card software) to scan the area for wifi networks, which will be listed accordingly. Then you identify the correct one (yours..) and tell the card to use that one. I have an Acer laptop - but not to hand; will check what/where etc. on mine later this evening (very much later...) and get back to you with the typical route/approach for an Acer laptop. Hopefully others will come across here and help you before-hand.

i meant a network card not a wifi connection, and when i connect anything (the internet or my other computer) it shows that there is no connection COTOMAN

Doe's it show the connection in Start > Settings > network connections? If not you have to add the connection.

yes it is shown there, it was working but now the 2 lights that show that the cable is connected (the one near the plug, the green) are always on even if there is no cable connected, i think it has been damaged COTOMAN

Possibly uninstall, then re-install the NIC drivers (and the device itself)? Is the protocol (presumably tcp/ip) still installed? http://support.microsoft.com/kb/314067 http://www.duxcw.com/dcforum/DCForu... may offer you a few ideas...; certainly a reasonably logical approach to verifying the NIC is OK and then on from there?