If the extension (.dat) isn't visible, open the Tools menu in explorer, and head down to Folder Options. Click the View tab, and then in the box at the bottom uncheck Hide extensions for known file types.
Also, if it is an animated emoticon you will need to rename it .gif . And as far as I know, there's no way to preview the images
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![[Image: AndrewsStyle.png]](http://web2live.org/36/AndrewsStyle.png)
