Opening Attachments From Web-based Email Are Saved In Temp Location

As above, if a user opens say a Word document which is an attachment on a web-based mail system like hotmail or outlook live and the user then just clicks SAVE, the document is saved to a temporary location.

We have lots of users who are doing this and then finding that they have lost there work etc as they have assumed it was saving to a network drive or even back to the attachment (yes I know thats wrong, but students don't always know till its too late).

So my question is, is there any way of getting Word to prompt them to save the document to somewhere when they click SAVE, rather than save it in a temp area under the temporary files area on the C: drive??

Is it possible to do with a Group Policy setting or any other way round not saving the doc in temp area and forcing the user to choose the location.