Hi Chris, I'm getting the wiggly red underlines composing a new message on my Hotmail account, so it should be possible. (Disclaimer: I'm blocking some of the ad servers, if that makes any difference.)

If you right-click the editing area, does "Check Spelling" have a check mark next to it? If not, can you click it to turn on spell checking?

Do you have a dictionary installed and selected?

You can see which dictionary is selected if you right-click in a text area and open the Languages sub menu. At least one dictionary should be installed and have a check mark to indicate that it is selected.

• open the "Add Dictionaries" link to install a dictionary if you do not have one.

The spelling checker is enabled if [X] "Check Spelling" in the right-click context menu has a checkmark.

You can enable or disable spell checking globally:

• Options/Preferences -> Advanced: General: Browsing: "Check my spelling as I type"

You can look here for dictionaries:

• https://addons.mozilla.org/firefox/language-tools/