I'm having trouble finding this - how to create windows xp interface? Is there an easy in radasm to change it over? And if it runs on win2kpro or win98se, does it look like a winxp app or a regular win32 app? I'm talking about the rounded button-styles, etc.. I notice my dialog editor has the rounded buttons but when I run it they are square.
You should add a Manifest to your executable (resource type #24). I do not have one at hand, but you should find it in your system (WinXP) executables.
There are also samples at MSDN. They show how to add a manifest to a standalone application and even a control panel applet.