Newb question. How can I connect 2 wired networks using wireless ?

I have 2 small cat5 networks. 1 is adsl connected by a router. 2 has no
external connection. I would like to link both networks using wireless to
create a larger network and also to give 2 an internet connection. Both
networks use switches that have spare capacity.
The closest point between 1 & 2 is about 20 metres with direct line of sight
but hardwiring is not an option for several reasons. There are pc's
available where the line of sight is shortest, but the incoming telephone
connection is about 65 metres away, no line of sight and quite a few old and
very thick walls between.
I suppose what I am trying to do would look like:
adsl -> router -> network 1 pc -> (wireless bit) -> network 2 pc -> whole of
network 2.
Can anyone tell me please what equipment I need for the "wireless bit".
Also, is set up problematical ? - I am very much a newbie at wireless stuff.
Hope the above makes some sense.
Thanks a lot

Nick.

sorry, i meant to post that message up one.



"Rob Morley" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) .com...
> In article <bi5mi7$5ip6g$(E-Mail Removed)>, (E-Mail Removed)
> says...
> > I have 2 small cat5 networks. 1 is adsl connected by a router. 2 has no
> > external connection. I would like to link both networks using wireless
to
> > create a larger network and also to give 2 an internet connection. Both
> > networks use switches that have spare capacity.
> > The closest point between 1 & 2 is about 20 metres with direct line of
sight
> > but hardwiring is not an option for several reasons. There are pc's
> > available where the line of sight is shortest, but the incoming
telephone
> > connection is about 65 metres away, no line of sight and quite a few old
and
> > very thick walls between.
> > I suppose what I am trying to do would look like:
> > adsl -> router -> network 1 pc -> (wireless bit) -> network 2 pc ->
whole of
> > network 2.
> > Can anyone tell me please what equipment I need for the "wireless bit".
> > Also, is set up problematical ? - I am very much a newbie at wireless
stuff.
>
> Get a couple of wireless-to-ethernet bridges, plug them into
> your switches, set their addresses and away you go (as long as you can
> configure both of the existing networks to be on the same subnet).
> Have a look at
> http://www.adslguide.org.uk/hardware...ksys_wet11.asp
>
> Or you could fit a wireless card to each of the two line-of-sight PCs and
> use bridging/routing software on them to bridge the ethernet networks.