Linking two VPN's

[liceboy]

Here's the setup:

At my office, I have a Netgear DG834 router that I use to establish site-to-site VPN's with some of my customers' networks. This works great.

At my home, I also have a Netgear DG834 which I use to establish a site-to-site VPN to my office.

Now, it strikes me that it ought to be possible for me to establish a tunnel from my home to a customer via the office, but I can't really see how to begin.

I'm a database specialist, not a networking guru, so please be gentle with me!

 

[liceboy]

OK, I guess I haven't given enough info. Here's some more detail:

Home: DG834 router, 192.168.2.1
Office: DG834 router, 192.168.0.1
Customer: Dunno what router, subnet is 10.0.0.0

Home to office: no problem
Office to customer: no problem

Home to customer via office: how? Does it involve static routes?

I have full access to the home and office networks/routers, and can change anything I want, including the subnets. I can't change anything at the customer end.

Can anyone help? Pleeeze?