Visio charts will be scaled from the page size you have used to the correct aize to fill a 35mm slide automatically. Remember not to place anything very close to the edges of the page, as it may be covered by the slide mount.

When you save your file, go to the drop-down menu in the upper left of your screen; choose "File," then "Save As," and save the file as a .vsd file. We have installed on our machine all the fonts which came with Visio as well as with Windows, but not all are active all the time, so let us know which fonts you used to avoid substitutions.