Hello. I am trying to write an alarm clock program with vb express 2008, but I've run into a problem that I need help with. I retrieve a time from a text box from the user, how do I make sure they have the correct format so I can match it up with a time that is using this format: Format(Now, "hh:mm.ss tt"). It seems simple, but it has me stumped right now. How do I tell if a part of a string is numeric or not? Any help would be appreciated.