[wplug] Routing question, maybe

[vze2f6h6 at verizon.net]

I am having a routing problem, I think.  I have a RH 7.2 machine that has two NICs and runs our Intranet.  eth0 is at 192.168.1.15 and eth1 is at 10.10.10.218.  Our Internet gateway is 10.10.10.1.  I can't access the Internet from this machine.  Our internet gateway is a sonicwall firewall appl.  When I check the log it says that the request came from 192.168.1.15 and it blocks it because it thinks that the IP is spoofed.  How can I get use the 10.10.10.218 IP?  I can't figure out way it would us the 192.168.1.15 IP.

Thanks,
Chris