Tim - Is the Login button greyed out? If so make sure the Path variables in the following registry locations is pointing to the Fortis directory on the server:
HKEY_CURRENT_USER\SOFTWARE\Westbrook Technologies\Fortis\InstallInfo\Path
HKEY_LOCAL_MACHINE\SOFTWARE\Westbrook Technologies, Inc.\Fortis\InstallInfo\Path
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Westbrook Technologies, Inc.\Fortis\InstallInfo\Path