Advice needed on wireless systems

Hi
I tried setting up a BT voyager wireless network at home, major problems,
couldn't connect etc. Many pounds spent talking to BT "helpline" who
couldn't "help" each different phone call blamed each different computer!!.
The whole lot is going back.
What wireless system would you recommend. I am on broadband on a bt line, I
have 3 PC's and a centrino notebook and would like to use a USB connection
on the PC's.

This is all quite new to me and Im not very knowledgeable on the subject
I would be grateful for any input.

Thanks
Mark

Probably the best wifi modem router is Draytek Vigor 2600We. It's got all
the features, easy to setup, very reliable, but not cheap. It pays for
itself in saved time and trouble. Mine hasn't missed a bit since May
installation.
Orinoco has reputation for best radio. I use the silver USB adaptors which
are easy to position for best reception, half an inch can make a lot of
difference.
Regards,
Martin