Bridging Apple Airport Extreme to Linksys WET11

Looking for advice on wirelessly bridging two networks - first is my
next door neighbor's Apple Airport Extreme which is hooked to his DSL
and provides wireless access to his Macs. He's kindly offered to JV
his DSL and I'm trying to boost wireless connectivity on my side of
the fence (where we are running IBM laptops/linksys cards). My idea is
to get a Linksys WET11 and to use this as a bridge/booster to my
neighbor's Airport. BTW we have limited connectivity at the current
time - but only in one room. I'm hoping that the WET11 to Airport
range will be better than our current PC card to Airport range. Does
anyone have any tips on configuring the WET11 in this situation, and
the likely range between a WET11/Airport (btw signal needs to go
through 1xBrickwall, 1xWooden Fence, 30ft of air and through a glass
window)

Thanks

Anthony