My task List has the Folling Fields

1. Start Date
2. Due Date
3. Survey Submitted By

Through Visual Studio Workflows I want to acheive the below scenario. Can any one give me an idea which actions i should use.

Note: Here Task is Already assigned in the taks list. On Workflow Activated i need to fetch the Task item and send an email and do the below step again.

i. Send an email to the Survey Submitted By (user) when the task is created. ii. Send an email to the Survey Submitted By (user) when the task is a week from the Due Date (if the task is not completed) iii. Send an email to the Survey Submitted By (user) when the task is two days from the Due Date (if the task is not completed) iv. Send an email to the Survey Submitted By (user) on the Due Date (if the task is not completed) v. Mark the Task as “Not Completed” and remove the Survey Submitted By’s (user) permissions when the task is past the Due Date and Not Completed

Thans, Sandy