# download pyexcelerator from 
# http://downloads.sourceforge.net/pyexcelerator/pyexcelerator-0.6.3a.zip

# install the pyexcelerator following the instructions

# download trac-0.10.3
svn co http://svn.edgewall.org/repos/trac/tags/trac-0.10.3 trac-0.10.3



# apply the patch, and copy the new file icon

cd trac-0.10.3
patch -p0 < ../trac-0.10.3-excelreport.patch 
cp ../trac/htdocs/xls.png htdocs


# add to your trac.ini:

# [ticket]
# show_excel_link = true