I want to set a macro to run at a given time.

Application.OnTime 'does this in excel, but I can't find a way in outlook.
any help?

Also, I'd like to be able to pass a parameter to the macro, but that doesn't
seem posible. I'd get round this in excel by putting the parameter in a cell
somewhere, but I don't know where to store it in Outlook.

Thanks in advance
Rob