In that case, I will have to suggest a very very dirty workaround for tackling this problem.
1. Have a page that will do the required task. do the required task only when a specific query string is present. This way you will ensure that only you know this actual link that will perform this operation.
2. Now whenever you access this page with this specific query string this task will run. you can do it manually but you can still automate it. lets see how:
3. create a simple winform application with webbrowser control in it and navigate it to the required page with the specific querystring. all hard coded in the page_load. so when application opens up your task is done. close this app in webbrowser navigated event.
4. Now configure a windows service on your PC that will run this application on a specified time.
P.S. all this assuming that the task you need to perform is not time consuming otherwise you will get timeout problem.
Note: I am not recommending this approach. it is very very bad. but in desperate times such workarounds do work.
Every now and then say, "What the Elephant." "What the Elephant" gives you freedom. Freedom brings opportunity. Opportunity makes your future.