I'm still puzzled as letters are not saved in Office 2010 but in a default location which is normally My Documents. When you click on Save, instead of Save As, with a new document a similar window to Save as should have opened.
Sorry folks - if I've caused confusion! When I said "saved in Office 2010" I meant that the document appeared in "File>Recent". But I see now that the document is actually "saved" in "My Documents" folder.
You'll have gathered that I'm not too proficient at all this! PCA Forums are my ever-dependable helpline!