I'm not sure if this problem only occurs for users like me who use a hacked uxtheme.dll instead of the StyleXP software. After I download and unzip the theme e.g. EclipseOSX into the c:\windows\resource\themes directory, I don't see it appearing under themes (at the window under desktop properties) when I want to change the theme. This occurs for quite a few themes I downloaded. However, I can see and choose to use themes like Ocean, MacOSX etc. I figured that because the zip files of these 2 themes contain this ".theme" file, hence, the name of the theme appear. So, does it mean that, with StyleXP, even when the ".theme" file is not present, the theme can still be used? Can someone enlighten me? Thanks.