wireless encryption needed

The router will give you the IP. If you run:

route

The IP address after the word 'default' is the routers IP. You can then access that in your browser and configure your router.

i get the address but i can't access it on the browser..

Are you connected to the router?

meaning? i can browse the web with my wifi connection because the rooter is on...

If you run:

route -n | grep 'UG[ \t]' | awk '{print $2}'

It should show it.

if you use firefox (most people do despite it being rubbish imho) you can run:

firefox `route -n | grep 'UG[ \t]' | awk '{print $2}'`

nothing changes... it's always the same error page..

Lorenzo sometimes i see firefox cannot render the page in a good way ( for example in some netgear routers) so please tell the brand and model of router you have

It is called A02-AP1-W54 - NetFly-AP1 ...

If you are connected via wireless you may be unable to 'manage' the router -- try using an Ethernet cable and then find the default gateway -- use that IP address to try and connect.

i tried that either, error messages from firefox it's all i get - still...

Have you tried resetting the router?

how am i supposed to do that?..

that would depend on your router --- usually there is a 'reset' button that requires a pen or paper clip to depress.

Lets first try just powering the router off and then turning it back on. That would 'reboot' the router w/o resetting it to base settings.