There is a good application you can use especially in this Ramadhan, this application called Athan, and I have promoted the application a year a go at the previous Ramadhan (1430 H) now I want to promote it again. With Athan you will always be reminded to shalat (Pray) because after you installed the application to you computer, it will automatically play Athan.
It supports all version of Windows (98, 2000, NT, ME, XP, Vista, & Windows 7), you can download for Athan Basic (free version) or Athan Pro (premium version for only $29.90). You will be reminded with Athan voice in every prayer times.
About Isa Nagib