Could somebody explain static routing to me please.

I have the following:

SITE A
WAN = 10.1.1.1/32
LAN = 192.168.1.1/24

SITE B
WAN = 10.1.2.1/32
LAN = 192.168.2.1/24

How do I tell SITE A to connect to SITE B?

Do I put a static route into SITE A like:
IP ADDRESS = 192.168.1.1 (SITE B's LAN)
NETMASK = 255.255.255.0
GATEWAY = 10.1.2.1 (SITE B's WAN address)

and do the reverse for SITE B?

NB: please be aware that SITE A (wan) is aware of SITE B (wan) and vice versa via the next hop router and both sites can ping each other. We just can't get the LANs to talk.

You need to route the networks / subnet, you are just routing single addresses, in this case the LAN side router interfaces.

Site A = 192.168.2.0 255.255.255.0 via 10.1.2.1
Site B = 192.168.1.0 255.255.255.0 via 10.1.1.1

Thanks for the reply.
Now is is possible for SITE A (WAN = 10.1.1.1) to have devices on the LAN SIDE to be in the same subnet as the WAN:

SITE A
WAN = 10.1.1.1
LAN = 10.1.1.0/24 (and have DHCP enabled for this)

SITE B
WAN = 10.1.2.1
LAN = 10.1.2.0/24 (and have DHCP enabled for this)

I'm trying to do away with the 192.*.*.*/24 so that anything on the LAN side of SITE A can talk directly with anything on the LAN side of SITE B.
At the minute, SITE A router (10.1.1.1/32) can talk to SITE B router (10.1.2.1/32) but if I could get the above to work, I would imagine that SITE A & SITE B would have to change to a /24 instead of a /32

Can anyone confirm my thinking here?
Thank you.

What connectivity do you have between SITE A and B?

Leased line, metro net etc?

This is an MPLS network.
We simply connect via ADSL to their core network and specify our password etc and input the WAN address eg 10.1.1.1 into our CE router.
Our router then automatically picks up their PE router address. It's basically a private network and their PE routers are aware of our CE Routers.
We're trying to get the LAN side of our CE Routers to talk to each other.
I think that the LAN side of the CE routers have to have a totally different subset to the WAN side of the CE Routers and we would have to enable static routing to make them aware of each other.