For networkers who use the MS "Internet Explorer" browser to visit websites, there is a good (free and fast and easy to use) online spell-checking program available for download.
Go to http://iespell.com. The download page is http://iespell.com/download.php
The program downloads and installs easily, and is very helpful when composing online messages. It creates a link for itself in your IE browser window (in the "Tools" menu).
When you are posting a message to the UCS Forum, for example, and you want to clear up any errors in spelling -- just click on the "iespell" link in your tool menu. The spellchecker opens immediately, and starts helping you correct your message.
From their site:
ieSpell is a free Internet Explorer browser extension that spell checks text input boxes on a webpage. It should come in particularly handy for users who do a lot of web-based text entry (e.g. web mails, forums, blogs, diaries). Even if your web application already includes spell checking functionality, you might still want to install this utility because it is definitely much faster than a server-side solution. Plus you get to store and use your personal word list across all your applications, instead of maintaining separate ones on each application.
The program installs as a new button in the IE toolbar (as well as a new menu item under "Tools") - after filling in a form, just hit the ieSpell button and it pops up a dialog, similar to the MS Word spell check. ieSpell also works (right-click menu only) on other IE based browsers such as SlimBrowser, CrazyBrowser, MSN, MyIE, etc.