After removing Office 2007 from my computer earlier today after helping a friend with a few coding issues several weeks ago, my file associations ended up in a limbo where they weren’t associated with OpenOffice.org (.doc, .xls, .rtf, etc.). A few Google searches didn’t turn up any proper solutions, but Jan-Petter suggested that I should simply go to Add / Remove programs and choose to repair the installation. After finding the application in the Add / Remove Programs list and clicking ‘Change’, the installation dialogs from OpenOffice.org popped up. A few clicks later after selecting Repair and waiting for a few dialogs to finish, everything was back to normal.
And that’s how you reassign OpenOffice.org to handle all its file extensions again.