I stumbled across a serious issue months back, which didn't exist in earlier versions of OOo. OOo 3.0 removed the option to associate file types, instead opting for the "I'll either do it or I won't." model. This is very confusing for users, and system administrators. The only way to fix it is complex registry changes, which is downright awkward to explain over the phone.
After upgrading to OOo 3.0, OpenOffice may(or may not) be associated with commonly used filetypes like
I myself removed Wordpad from Windows, and deleted the
------- Additional comments from willkil Sun Feb 15 01:09:10 +0000 2009 -------
I disagree w/ the statement about 3 choices. There are only 2 states: make OOo
the *default* application or not. "Not register at all" doesn't make sense as a
choice. If there is not already an association for a given type, the checkbox
should default on. If there is an association already, the checkbox should be
off. But for *all* supported filetypes, OOo should associate as an *available*
application so that OOo at least appears under "Open With ->"