newbie - pix 520/ios 6.3(4) static routing problem

Hi, I have this simple problem: I want to set static routing between networks:

192.168.0.0/24 (net A) 192.168.1.0/24 (net B)

PIX: IF1 - 192.168.100.6/30 (conected to router in net A) IF2 - 192.168.101.5/30 (conected to router in net B)

I have router set up in net A with static route to 192.168.1.0/24 via

192.168.100.5/30 And another router in net B with static route to 192.168.0.0/24 via 192.168.101.6/30

on PIX I set up static route IF1 192.168.0.0 255.255.255.0

192.168.100.5 1 IF2 192.168.1.0 255.255.255.0 192.168.101.6 1

I can ping net A and net B from PIX

but I cant ping net B from net A

I set up the same config on my test linux machine and everything works... Can you please tell me what I am missing on my PIX ?

thnx in advance

V.