Wireless between two buildings

[BCinSC]

Want to create a link between two buildings line-of-sight about 100m apart. Hope to use fastest wireless available, A or G, as I need LAN, Video, and VoIP. Probably need directional antennae (suggestions?). Shared a Linksys WAP11 with my neighbor for awhile without issue, but that was only about 50ft. Who are the players in the wireless field aside from Linksys, D-Link, and NetGear? Thanks in advance.