Custom SSRS subscriptions user interface using ASP

We need detailed examples on using Microsoft's Reporting Service's GetSubscriptionProperties / SetSubscriptionProperties in conjunction with ASP. We do not have experience using these tools and the idea here is to learn from someone with experience in this area. Our end goal is to program a custom ASP front end that will allow our users the ability to set up and change SSRS data driven subscriptions without accessing the standard Microsoft UI. If you have experience and can provide us with clear - detailed examples / tutorials on how to call these functions please submit your bid.