Spell checkers are usually incorporated into Word Processor applications, or generally in Office Suites, although the Firefox browser has included a spell checker in it's newest version 2.0
Which application are you talking about?
Well recently after i re-formatted my pc i put this spell check on and now whatever i t type it always has that red line underneath words that arnt spelt correctly. It helps me alot but i forgot hot to turn it on. I want to do it for my friend. Anyone know how?