Ok, I have this .shw file for a class that I need to be able to open and edit. But, I don't want to buy the $230 corel program. I tried opening this file with windows explorer's defaults, with powerpoint, with VLC player, and as a webpage. None of that has worked. There is always an error. Is there an open source program i can download that will open it? can i use what i already have with windows 7 and office 2010? Thanks for all the help.