creating application specific files?

[MRAB]

muhannad shubita wrote:
> hello there, how can i create a new file type and associate it with a 
> program, for example create a type like .XXX file and give it the 
> application icon, and when double-clicked on the file the application 
> runs....
>  
> [windows platform]
>  
> help is appreciated.....
> 
In Window Explorer, go to Tools->Folder Options, and then the File Types
tab.
If you mean programmatically, read about ASSOC:

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/assoc.mspx?mfr=true

and FTYPE:

http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/ftype.mspx?mfr=true