The VPN is pretty good. My only complaint is that it doesn't load all the symbols like Citrix. There is a setting to make it happen but it takes like 10 mins for all the symbols to load, so you are better off just putting your favorites on the list.
As for networking I do have problems seeing my other computer when the VPN is connected, but my DSL sharing works fine. I know of one other guy that has networking problems also.