I have their 290M and 178C (and a 269C on the way) that work fine. You should install AltairCapture first, which is downloaded from
www.altaircameras.com. Once it is installed, you should be able to just plug the camera into the USB port and when you run AltairCapture, the model number should be in a list in the upper-left corner. When you click that, the video window should appear. Some other programs do have the Altair drivers built in too (PHD2 and Sharp Cap among others), but AltairCapture can at least let you be sure the camera is operating. Hope that helps.