I'm using Windows Azure and I created a VPN Site To Site, configured like this:

My virtual network:

My address space:  10.2.0.0/16 (65531)
Subnet1: 10.2.1.0/24 (251)
Subnet2: 10.2.2.0/24 (251)
Gateway: 10.2.3.0/29 (3)
My public gateway IP: 137.135.x.z (I wont show x and z for security reasons)

This public gateway uses, as you can see, 5 IPs on subnet1 and 5 IPs on subnet2,
and 5 IPs on the gateway

"Their" virtual network (in azure this would be a "Local network")

Their address space:  172.60.100.67/32, 172.60.100.68/32, 172.60.100.69/32
Their device public IP: x.x.x.x (ommited for security reasons)

Notice their address space are 3 IPs

So: the VPN is "in green" (in Azure is showing up green, literally, like these two are connected) and now my question is: How do I proceed to reach their address space?

I've tried creating a virtual machine (Windows Server 2008, but it could be an Ubuntu) on "my" virtual network and it is automatically "placed" on subnet1 or subnet2. So it gets the IP 10.2.1.0 (valid example), I can't choose to place the virtual machine in the gateway address space.

How do I "reach" any of the IPs 172.60.100.67, 172.60.100.68, 172.60.100.69 ?
In other words: How can I telnet any of these IPs? or ping? or see them in my network?

Please provide me answers for Windows Server 2008 or for an Ubuntu.
I'm open to create any virtual machine.