Care to share? A utility similar to this is one reason I am currently trying to re-learn code. I have failed repeatedly to put any form of calender software into use and like you, I just need simple reminders. Sometimes I need reminders days off, sometimes I need them 5 minutes off.
Anyway, send me an email (see my profile) or I'll send you one, and I'd be glad to share my absurd little hack. I see from your profile that you spend a fair amount of time in Windows. Me too -- particularly when I wrote the thing I'm thinking of -- which is why I turned to VBScript (it's also doable in JScript aka MS Javascript. Hmm, maybe it is in Jscript...). I wanted a dialog that would force its way to the top of the window stack (Z order).