Vista - wireless lan problem

Hi @ll,
I have some problems with my wlan and dsl router. After vista install (5600)
and set up I could connect to the internet. After reboot I could see my
router but with signal strength 0, no connection possible. I installed a
recommended update for my intel pro 2200 wireless device and I could connect
to the router. After reboot same problem: I can see my network but no signal
there. Other notebooks are on line (win xp), no problem. I changed the secure
method WEP -WPA but it doesn't help. After searching for wireless networks
there are some available, but only my router with no signal. Any ideas?

Thanks

Sixtdeu