Tried to install Sketchup 2013 on Ubuntu Lucid, and it kept complaining about needing to install the Windows Imaging Component.
Downloaded it: http://download.microsoft.com/download/f/f/1/ff178bb1-da91-48ed-89e5-478a99387d4f/wic_x86_enu.exe 53c18652ac2f8a51303deb48a1b7abbdb1db427f
But it claimed a newer version was already installed. From here I gleaned that I needed to move system32/windowscodecs.dll out of the way first: http://winetricks.googlecode.com/svn/trunk/src/winetricks
Then I was able to install WIC and then Sketchup.