2 buildings 800 or so feet apart 1 has DSL 1 needs it how to get dsl to to the other building?

building 1 has surveillance and we will be adding surveillance cameras to building 2. Building 1 connected via the dsl modem. someone suggested getting a 5.6GHZ wireless router and then a point to point access dsl extender and then connecting it to building 2 that should be able to get the dsl to building 2 and then we can use our dvr to connect to the building 1. we would ultimatly connect the dsl modem to the router for this to work correctly. any suggestions on how to best get this accomplished. thank you
2 buildings 800 or so feet apart 1 has DSL 1 needs it how to get dsl to to the other building?
My place of employment has a similar setup with one building about 900 feet apart. They connected the two with a linksys wireless G router and a linksys Wireless access point in the second building...both units with Yagi antennas on the roof pointing directly at one another. This system works great for them and provide the link to our server and point of sale computers.