To add new software application in openWith option : ubantu(10.10)
You are using Ubuntu 10.10 - the Maverick Meerkat - released in October 2010 and supported until April 2012.
    
It is very simple:
Steps are:--
You are using Ubuntu 10.10 - the Maverick Meerkat - released in October 2010 and supported until April 2012.
It is very simple:
Steps are:--
- Right click on any item you want to choose from your system
 - select the option '' custom command to open ''
 - click on browse option-> then choose->file system.
 - file_system->usr i.e. then select usr folder.
 - usr->bin i.e. select the bin folder.
 - then search the software you want to choose.
 - select it and press ok.
 - your application open in that application you want
 - congrts.