Firefox Portable 設為預設開啟網頁應用程式

JDP

1. Download registerfp.zip and save to Desktop.
2. Unzip the archive and extract the contents to a folder.
3. Double-click the file RegisterFirefoxPortable.exe to run it
4. When you see the User Account Control dialog, click Allow

5. Click the Browse button and locate the Firefox Portable executable


Reference:
Register Firefox Portable With Default Programs in Windows 7/Vista
http://www.winhelponline.com/blog/register-firefox-portable-with-default-programs-in-vista/