I find it hard to believe that you found this site, registered, posted a message without seeing the first page
www.2000adonline.com that makes it pretty obvious its a comic.
The comic is great, titan books publish complete stories ( strips from the comics together, instead of week by week ) with larger panels and they are an awesome read.
The film is great except for one thing, the plot is far far far too complex.
I actually like the film, it would have been very easy to have dropped the judge uniform as it looks silly in film format but respect to stallone on insisting it should stay as it did.
It is possible to see the film and not realise its a comic but to find this board and not know sounds odd. I advise you look in the graphic novels / comics section of large bookshops to try find mr dredd.