Icons

When you emulates a game with Wineskin Winery, it does not generate the icon, and so, I indicate two ways to get your icon, but anyway, you will need the program img2icons :

1 - Download an icon:
Get an icon with a good resolution on sites like:
http://www.iconspedia.com
http://www.iconarchive.com
http://www.softicons.com

2 - Create the icon:
Get a picture on the internet to use as icon, edit in Photoshop, Gimp or in the Preview and use the PNG format to create a photo with transparency (no background, as the figures of the sites above).

3 - Extract the icon:
As the latter case (since the Windows icons has a resolution of 16x16, 32x32 and 128x128, while the resolution of Mac is 512x512), you can withdraw Windows application icon with the Windows program Icons from file installed by Wine or by Winebottler (Wineskin occupy much space). Extract on the ICO, BMP or PNG extension. Other option is use the new program I discovered, the Anywhere PE Viewer, learn more here.

When you have your picture, take it to the img2icons and convert it to icns. Then just put the icon in the game.