The video files on your DVD camcorder will be VOB files (the ifo files are 'information' about the video). You will need to convert these to a suitable format first. You camcorder should have come with software to do this, most probably straight from the camera. DVD camcorders typically have only a USB connection, which means the transfer may well be a) slow and b) less than a perfect copy.
If you want to convert the VOB files to something else (such as an AVI file with DivX compression) there are a number of prpogrammes. I suggest youy try Fair Use Wizard 2.