TL;DR.
If mIRC included the Aspell library (what Firefox and Pidgin IM use), then people who use Pidgin to IRC instead of mIRC couldn't use the excuse that "Pidgin is the only client with a spell checker."
Integration of Aspell takes about 5 to 7 minutes. It works with mIRC's existing RichEdit control (the place you type). Squiggly lines become automatic.
