1. Click on 'Scheduled Tasks' in Plesk
2. 'Add New Task'
3. Enter a Description and Email if required
4. In the 'Path to executable file' field ENTER the path: C:\Windows\system32\cscript.exe
5. In the 'Arguments' field Enter: C:\inetpub\vhosts\MyDomain.com\httpdocs\myschedule.vbs
6. Because cscript.exe won't execute an asp file, you have to create a vbs script, that will then call the asp script.
In the myschedule.vbs script, we'll use the xmlhttp request to open a web page.
Copy and paste the script below and save to a file called myschedule.vbs and upload this to your site.
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Call RunIt()
Sub RunIt()
Dim RequestObj
Dim URL
Set RequestObj = CreateObject("Microsoft.XMLHTTP")
'Request URL...
URL = "http://www.Domain.com/yourScript.aspx"
'Open request and pass the URL
RequestObj.open "POST", URL , false
'Send Request
RequestObj.Send
'cleanup
Set RequestObj = Nothing
End Sub
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7. Now you can create your scriptSchedule.aspx page, or whatever you would like to name it to perform the tasks you require to be scheduled.