Forum Schedule/Personal Calendar for Events

I was just thinking about a system where members could set a time and date + console and people could sign up and get alerts in their schedule on the forum, there could be an option to let them confirm they're taking part about 1 hour before the event. I think it would be a great system not only for hosts but also for players who take part, to organize everything and be well informed. I only have basic knowledge in html and don't know how the ProBoards software works, so this is only a concept. Please tell me what you think of this

Felix