Dont try to windows it. Read the install guide (Score 2, Informative)

Progeny is a small company, debian is a huge organization. The progeny installer might work for some people in some common situations but it doesn't work well for you, so don't persist using it. Debian is easy to install you just need to read the manual. The major difference between Windows and a debian system install is that you need to tell it what you have (hardware) and what you want to install (software). If you don't want to do this try KNOPPIX http://www.knopper.net/ it is the same debian on a bootable CD and it will probably help you get a idea about what you are doing, in a fairly safe environment.