FRx 6.x is 32-bit application and not supported running on a 64-bit version of Windows.
Some parts of FRx 6.7 may work on a 64-bit version of Windows due to the 32-bit compatibility layer (WoW64). However, this environment is not tested or supported. The parts that may not work are Security, Excel import\export, Report Wizard, Report Manager, Report Server and Webport.. Microsoft recommends running FRx 6.7 server modules on a VM machine with a 32-bit version of Windows Server.
FRx service pack 9 or later is compatible with Windows Vista. FRx 6.7 service pack 11 or later is compatible with Windows 7 and Windows Server 2008, but only with 32-bit versions not 64-bit versions.
FRx 6.7 should have no problem retrieving data from a 64-bit SQL Server database.