bridging and ip-forwarding + squid

[software@lacerda.de]

Hello,

I have some problems to enable a correct routing in the interfaces file. I hope someone can help me.

My network:

router for internet:
192.168.2.1

ubuntu server 8.04 with 2 network cards in vmware:
eth0 192.168.2.2 / 255.255.255.0
eth1 10.10.10.2 / 255.255.255.0

internal network range:
10.10.10.1 - 10.10.10.254 / 255.255.255.0

ip-forwarding is enabled

how must the interfaces file looks like?
what is then the gateway ip in the internal network? (10.10.10.x)
what is the gateway ip for squid then?

thank you!