jpretori

To get rid of the black command prompt window that opens as part of the process, change the command that is executed to: C:\windows\system32\cmd.exe /C "start /B msg jpretori /W /V "15-minute check""

You don't need a specialized app to do that. Try this: Go to Start->Control Panel->Scheduled Tasks->Add Scheduled Task. Select "Command Prompt" as the application to run. Set up the schedule to fire any which way you want (there's a lot of flexibility in there) Open the settings for the new task, change the command that is run to the following: C:\WINDOWS\system32\cmd.exe /k "msg jpretori /W /V "15-minute check"" Of course, change "jpretori" to whatever your username happens to be. To see the reminder that will be displayed, run msg jpretori /W /V "15-minute check on the command prompt (Start->Run, then type "cmd" and hit enter)