wireless network no longer working

I've had a wireless network up and running for over a year now, it was
working fine up until last Wednesday, when I powered it back up and it
didn't want to play.

WAP is a US Robotics USR 012249 connected to a hub.

Internet connectivity is a DSL line connected by USB to a PC running
Windows ME. PC also runs Nat32 which provides DHCP and NAT services to
all other devices connected to the hub.

Other Win ME box and XP Laptop using ethernet cable all work fine and
get IP addresses from Nat32 and can access the local network and
internet.

XP Laptop with Belkin wireless network adapter cannot see the USR
012249 WAP but can see my neighbours netgear WAP.

Nat32 diagnostic logs tell me it is assigning an IP address to the USR
012249 WAP of 192.168.0.102 - as would be expected as my other ME box
is 101 and the laptop on ethernet is 103

USR 012249 WAP has power LED on red, link LED on green and data LED
flashing green after it has been reset as USR instructions (hold down
reset, power off then power back on and count to 10) USR support are
being far from helpful, does anyone here know what the problem might
be or what the LEDs are trying to tell me ?

Best - Blu