Hello James, Thank you for your comments! I'd like to mention that the software I'm using has Windows version only. There is no Anita for linux. That's why I have to use WINE to run Anita on Linux. When anita needs to display the HTML page I assume It will call the default browser. Since Anita is a windows application running under WINE, I think it will not be able to call linux version of Firefox. It will call the default browser for WINE. This is how I understand the process. Thank you very much for your help! P.S.: On my FC6 box, there is Firefox installed. AdobeAcrobat plugin for Firefox is also installed. I can view PDF files inside Firefox.