tiff, I'm no expert but this is where you will find the settings you need.

On the menu bar go to Tools - Options - Save. This is where you can specify the dir. in which to save your files. Likewise the next entry (T - O - Share) for any that you want to make available.

If the options window doesn't show the Apply, OK, Close buttons, expand it with your mouse cursor (they should be at the bottom).

Hope this helps.