When you install Firefox on windows, by default it does not install the DOM Inspector.
To make sure it installs it, select Custom Install then select Web Developer Tools.
If you already have FF installed you can install the DOM Inspector without having to reinstall FF:
- Run the FF installer - just so it unpacks the install without installing anything.
- Use file explorer to locate the C:\Documents and Settings\<username>\Local Settings\Temp dir. FF will have created a temp directory to unpacked the install components into (in my case "7zS17.tmp").
- Start FF.
- Drag adt.xpi onto the FF window. This installs the dom inspector.
- Cancel the install.
- Restart FF.
Thanks very much to clagnut for his informative post on this - and to Thierry B for his additional help on this.
Update for Firefox 2.0: (25 Oct 06)
Same problem exists - whereby it did not install the DOM Inspector by default. However the solution mentioned above does not appear to work (as I couldn't find the adt.xpi file) - so there is another work around - for which I've created another post (for feed subscribers).
HTH
Tim