I continued, and after a minute or so, I got a "blue screen" (windows crash, you know xD).
I tried second time, it says "Reading Sectors..." and status bar is 0%; I get blue screen again.
So I used Daemon Tools Lite to create a virtual drive with a .bin and .cue image of the Crazy Taxi disk (disc) I created with ImgBurn and from that i tried to make an ISO file with ImgBurn from the virtual drive. This worked, so I used the ISO I just created with Daemon Tools Lite.
And wow!!! Thank you, it works!!!
EDIT: Wondering if images of PS2 demo disks (discs) are legal to download for free... Are they?
EDIT 2: Fixed some typos. ("seconds" ; "disk(disc)" to "disk (disc)" ; "...Are they?" to "... Are they?" ; )
EDIT 3: Used /SIZE too early in EDIT 2, should be fixed now.