Using UpdateResource() to change app's icon

[kb]

Hi, I am trying to write a small utility that allows users to customise the icon of my program, which is a precompiled EXE (similar in function to MicroAngelo etc, but much simpler, with only the option of choosing the new icon, which will then be applied to the EXE). I believe UpdateResource() can do this for NT (and the _UpdateResource class over at http://www.codeguru.com/misc/resources.html does pretty much the same for Win 9x). However, I can't figure out how to use UpdateResource correctly. I can't even get the sample code from MSDN to compile correctly. Could anybody tell me how I can use BeginUpdateResource(), UpdateResource() and EndUpdateResource() to swap the icon in an EXE file for another .ico file (ie the end user will just have to select an .ico file)? Many, many thanks to anybody who can help or give me any pointers. All the best, KB