Here is my situation
i have a PIX515 on subnet 10.6.0.0 with a vpn tunnel to a pix501 on subnet 10.7.0.0
on subnet 10.7.0.0 i have a linksys vpn router with LAN ip 10.7.1.6 and WAN 10.4.194.101
from the i have static route in the 501 to 10.7.1.6 to hit the 10.4.194.0 network
form the console i can ping any ip in the 10.4.194.0 network
i also put a static route on the 10.6.0.0 pix to route 10.4.194.0 requests to gateway 10.7.1.6
as long as i put static routes in pcs on the 10.7 network i can ping anyhting in the 10.4.194.0, but i cannot ping from the 10.6.0.0 network , and i also cannot ping the 10.6.0.0 network from the 10.4.194.0 network.
i also did a nat on the 501 for 10.6.0.3 > 10.7.1.90 and i CAN hit the 10.7.1.90 from the 10.4.194. network, but cannot directly ping 10.6.0.3
the machine i really need to get to on the 10.4.194.0 network also has no default gateway set, and i cannot set one, as is is a server managed by General Motors.