When you scheduled it on Arvixe I assume you followed this:
How to Use Schedule Task in DotNetPanel to Execute a URL | Arvixe Blog[
^] - I use the same thing to run a couple of tasks and it all runs fine.
But the scheduling of the task is irrelevant - all it does is causes the app to be run at a specific time, so it's the same as running an aspx file locally on your PC. So just open the ASPX file in VS and execute it. It'll load in your default browser and run as normal. The debugger will be attached and it'll run.