Something you can do with IE's bookmarks (This may wotk with other browsers
Create a new short-cut (Right-click in a folder, New -> Shortcut). This
starts a wizard.
In the location-box, enter a valid url (for instance
http://www.flipcode.com) and click next.
Name the shortcut "dictionary" and click finish.
Right-click on the newly created shortcut and select "properties".
Replace the URL with:
You may get a warning, which you can ignore.
Drag the shortcut onto your "Links" toolbar in IE.
Now you can select a word in the currently loaded HTML-document, click the
dictionary shortcut and you will go straight to a dictionary site with the
selected word as search parameter.
The zip file viewer built into the Developer Toolbox made use
of the zlib library, as well as the zlibdll source additions.