yea, i tired those both...
i changed the .key extension to .ppt, then archived it into a zip and emailed it to myself... went on my windows computer, unzipped it then clicked on the ppt file, MS powerpoint started to open but then said it cannot open the file because its not a powerpoint file.
i then tried changing the .key to .pdf... it changed, but then when i tried to open the .pdf file on my mac, it gives me an error