3 remote systems connected by DSL cloud need to have netwrok connections between each site. File servers at 2 location none at third. Should I go with VPN routers or setup rack servers running Win2k to connect. WIn a free sticky pad for answering.

We have a wireless connection between 2 plants located over 10 miles apart this connection also connects to the internet via a third party. Have simple netgear RO318 routers in place now with allow for internet hookup. I need to connect both networks...