Nikon Coolpix 990/880: USB connection support
Unfortunaly, it's not implemented so far. USB implementation of Nikon Coolpix 990/880 is not standard.
But you can use COM-port serial connection.
Support for Nikon Coolpix 2000
Unfortunaly, it's impossible. Nikon Coolpix 2000 has different firmware and internal command set.
Support for Nikon D100
Unfortunaly, it's impossible. Nikon D100 is too different from Coolpix series.
Support for Canon's EOS and PowerShot
Unfortunaly, it's impossible. Canon has own command set.
The program doesn't see my camera.