>> WineBottler |*Run Windows-based Programs on a Mac
>>>>>>> Important <<<<<<<<
Make sure you download the Development Version (tested with 1.6-rc3) first and see if it works. If it doesn't work try the Stable Version.
"[The Development Version] is the current development branch of Wine. The name is a bit misleading as it is superior to the stable build in most aspects. If your program is laking some functionality under wine, this is the version to go with, as it is evolving very fast. Check back often to download the most recent version. One of the big news is, that it does not need X11 anymore." [ref]
Once you installed the program you can use it to start PixelShop. You can download PixelShop here:
>> Download

For further information and how to get started see here:
>> Getting Started
If you have questions or problems please post on the forum!