I'm sorry about the network map from the prior post... I uploaded a new one.
A) Basically, I hope to be able to access documents, pictures, videos, and other media from my Windows 7 PC from my Android phone. I would prefer to use VPN over the "cloud" (I know, a poor marketing term) due to security and cost.
B) I don't believe so, but I would not prefer to anyway. My family uses the wireless network provided by that router/modem. I only use it to connect to the Jolicloud netbook; otherwise I use the wireless network provided by the other router.
When I ask Google what my IP address is, it returns a value, but that value does not work on my phone... I suppose I could try the same thing on a computer connected directly to the frontier router/modem and see what values are different.