Hello, I've just installed wxHaskell as follow: - Download wxHaskell from the following page: http://haskell.org/haskellwiki/WxHaskell/Download and downloaded the binairy version for Windows XP. - Registered using the batch file provided. Now I have this small program from my education page that I want to run just to make sure my installation is correct. ( http://www.cs.uu.nl/wiki/pub/FP/Practicum/Balls.hs) I've also got Helium (2003) and winHugs (sept 2006) (I'm so sorry for using the old versions, but I just can't find new versions) My GHC compiler is version: GHC 6.10.1 and my wxHaskell is named like: wxhaskell-bin-msw2.8.9-ghc6.10.1-0.11.0-0.zip. (If you need more information just contact me) Now my error message in winHugs is: And if ERROR file:.\Balls.hs - Can't find imported module "Graphics.UI.WX" And if I run that in Helium I get some error message that the . in "Graphics.UI.WX" is unexpected. (Which means by my views that it didn't import wxHaskell.) And if I run it in ghci it compiles perfect. So I thought let's type in "main" to start it in a interpreter. So I get the following: http://img10.imageshack.us/img10/5118/testzrs.jpg. I don't think that program is running correctly. Can someone point out what went wrong or what I am doing wrong? And some small question, do I always have to compile those programs in order for it to run correctly? Thanks for your time and effort! Tsunkiet Man