Recommended Web service for android?

[peace freezer]

Hi, I'm a newbie to android.
Currently I'm working with FYP where a web service is needed.
I need to develop an android application. The end user is able to capture the pic and tag it, key in notes,and even sketching.
However, it is private and confidential. It shouldn't be stored in the phone. The folder can only be accessed by authorised party at certain time or with certain device.
Thus I need a web service. Any suggestion for this?
Any tutorial for this as well?
I need it urgently.Thanks

[Ulf Dittmer]

There's nothing Android-specific about implementing a web service client. It sounds as if a simple file upload servlet would be sufficient, though, and for the client you could use the HttpClient classes that are built into Android.