Depending on the background you want to eliminate, there may be things you can do in Xara.
- Use the Background Erase tool.
- Use the Color Select/Erase tool.
Additional information
Take a look at the threads for some leads:
Transparent Background on an existing graphic
Help Seperating Picture From SingleColor Background
How can I remove a background behind a persons photo?
Picture Background
Removing Backdrop from photo
http://www.talkgraphics.com/showthread.php?t=18719
http://www.talkgraphics.com/showthread.php?t=18730&highlight=background
Robert Turner
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