I have just downloaded the hugs [...] The problem is that I don,t really how to make full use of the graphical capabilities. Would you please sent me some information concerning this matter.

You could try my graphics library (http://haskell.org/graphics) which is used in Paul Hudak's textbook (http://haskell.org/soe). Code from Paul Hudak's book is included in the current distribution of the graphics library (in the demo directory). My library has fairly limited scope: it is mostly targeted at static pictures with a little support for animations and interactive drawing applications and absolutely no support for GUIs. This restriction makes the library simpler to understand - but may not be what you want. (I'm trying to improve support for animations, rubber-banding, etc. in response to a recent query but GUI support isn't likely to appear anytime soon.) Haskell.org (http://haskell.org/libraries/) lists some other libraries you might use: several GUI libraries, a GIF library, OpenGL bindings, etc. Hope this helps, Alastair Reid