VPN

I am looking for a solution to the following setup.

I normally connect to my home office via the Microsoft PPTP VPN client on my computer. I now share my office with another individual but since we are on a NAT network we cannot both VPN into the home office at the same time.

I have no ability to change the home office network setup but I have total control over my local setup.

Can a M0n0wall be used as the VPN CLIENT on my end? In other words, can it connect to the home office VPN (Firebox) and then our work machines connect through the m0n0wall?
Are there other solutions that might work instead?