I don't know if this has previously been posted here but I found this on the Irmscher home site. It is a program that allows you to 'build' your car with Irmscher parts with instant display changes. Just choose "car configurator" and then, of course, "Corsa". Wait several seconds for it to load and then begin. It also allows different perspectives.
http://www.irmscher.com/default_uk.htm
http://www.irmscher.com/default_uk.htm