I have a stock FC3 install, and I'm using Firefox and Thunderbird. Couple of questions about configuring the environment... How do I get Thunderbird to be the "registered" email application? And when opening files and/or email attachments, how do I get the system (whether it be via Thunderbird, Firefox, or the file browsers, etc) to want to open .pdf files via "Xpdf" instead of Ggv? Thanks, -Philip