I'm having an 'ongoing' with a similar problem ....... and yes Belkin
support are hardly the best in the world.

HOWEVER ...... the modem/router is fine to my laptop (Intel Pro/100)
BUT has the problems you describe to the Belkin FD7000 card in my other
desktop (2 desktops - 1 laptop) the card PC connects .... well when it
wants to for as long as it wants to and NEVER securely. As soon as I
secure the network the Belkin card gives up ' Aquiring Network Address'
which goes on for three weeks.

Yes I have updated the card software, Yes I have re-located / moved the
card/PC (it's only 4 metres away)Yes I have unscrewed the ariel and
re-fitted, Yes I have adjusted EVERY setting/channel area suggested, No
it wont f...... work properly.

Yes I want my lifetime guarantee activated and the problem sorted, Yes
I want someone from Belkin support who can speak English, who I can
understand, and who can understand me, NO it's not a racist remark..

Any help?