C# Service or Scheduled Task

Question

I am new to C#. Been learning for about 6 months. I am currently working on a windows project for inventorying computers. I wanted to get some recomendations on whether to have this program run as a scheduled task on each client, or as a service on each client. I plan on having the client dump the information into an SQL DB. I am also looking to have it run maybe once a week. Thoughts and ideas would be appreciated!