To watch DVDs on you Archos 405 you need to first make an MP4 copy of the DVD and then transfer it to the VIDEO folder on your Archos 405.
How to make an MP4 copy:
1) You need to use MP4 converter software. A good, easy to use (and free) one is DVD Catalyst (http://www.clickapps.com/moreinfo.htm?pid=18048
). Choose the version for iPod v1.0. Download and install on your PC.
2) Load up DVD Catalyst on your PC and select iPod Classic/Nano/Video from the drop down menu. This is the best format for the Archos 405 using this software. It basically downsizes the DVD file to screen size 320x240 and converts into the best format for the Archos 405.
3) Insert DVD and click green arrow to start. A pop-up box will ask where to you want to save the mp4 file. The conversion process takes about 2 hours per movie.
4) Once converted the movie will be approx. 400-700mb in size. This means you could save up to 40 movies on your Archos 405 30gb.