Incredifind is horrible! It's a browser hijacker. Someone at work had downloaded crap and one computer had that on it. Took me 30 minutes removing the certain hotkeys and such to fix it. Adaware and Spybot search and destroy are two great programs that are free downloads and do a great job of keeping your computer clean. Hope it gets better.
Does your husband know about computers? The way I found out how to remove what was needed was, I went to www.google.com and typed in remove incredifind That will tell you what hotkeys to remove. Good luck!