How to view .XPS on Mac OS X

XPS format is a Microsoft standard format to use in MS Office. From MS Office you can print any document into XPS format (*.xps). However, I got a difficulty to read this format in Mac. The best way I found out is open with Google Doc. Here is how I did it:

1. Mail the XPS file with Gmail

2. Instead of download the file, choose to view file

3. The file will open with Google Doc and then later you can convert to PDF ^__^