connecting 2 netgear wlan routers

hi

I have 2 netgear wgt624 wireless routers
and am trying to connect them to each other
am finding it very difficult

one is in my home and the other across the street
they are each connected to a wired LAN via a switch

both LANs work fine
but now that one side has no ADSL connection
I want to share my one


I have 2 linksys wlan routers at work and they connect fine in ad-hoc mode
but there is nothing about ad-hoc in the menu

has anyone done this?
if so I'd like to know how


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Thanks in advance