site to site vpn routing problem

i have two server 2003 machines setup for site to site vpn
connections.

the first site has a subnet of 192.168.2.0
the second site has a subnet of 192.168.1.0
masks are 255.255.255.0 on all
the connections works fine and the static routes are configured as
follows

first site 192.168.2.0
second site 192.168.1.0

i am unable to ping from a client behind the first router and get a
response from a client on behind the opposing router. however i can
ping the other router with its respective ip address on the other
subnet, 192.168.1.110 from the client of 192.168.2.5. the reverse is
also true from the other side.

so i have clients on both networks that cannot see each other, but can
only see the router of the other subnet that it is connected to, and
nothing else.?

any suggestions?