Hello, I have a windows xp computer that i use to store pdf files. I use it as a network drive and I do all my daily work on a windows 7 machine and save to the windows xp computer. They are connected through a linksys wrt120n router. I have dsl service. I also have a dell d430 with ubuntu 12.04 on it. I want to be able to access and edit those files when I am on the dell d430 on the road. I would love to make this simple and possibly free. I would love if it just acted as a network folder I can access it on the laptop and then save the file when I am done to the network drive on the windows xp machine. The xp machine is constantly connected to the internet.

Please any help would be greatly appreciated

Thank you, Keith