Outlook 2003 Task Reminder Macro

I need a macro or program written for Outlook 2003 that is built into the task/reminder function. I need to be able to assign an email or contact to Outlooks task/calendar for instant email reminders.? The macro/program will essentially alert a contact or specific email address i have specified for a task on my calendar at a set time reminding him/her to complete the task. If i have a task to be completed in 2 weeks, and i assign a contact to complete the task i would like lets say one week before its done an email sent out to the recipient reminding him that the task is to be completed. I appreciate all input and help with this.? I am very serious about this project and would like to contract it asap.