Is it possible to mount a S3 bucket to a windows instance as a network drive on my EC2 system. Any ideas anyone.
Yes, but it is not advisable.
Amazon S3 is an object storage system, not a filesystem. The correct way to use Amazon S3 is to put/get files using the S3 API (or with tools that use the S3 API, such as the AWS Command-Line Interface (CLI)).
If you must mount Amazon S3, you could use 3rd-party tools such as CloudBerry Drive - Mount S3 as a Win Drive. However, I would recommend that you test your solution before using it in production environment.