Yes, you can uninstall 2010, but you have to clean out the registry completely of all Solidworks
to do this. I have a file if you need it that shows you how to clean out the registry.
Warning: if you have saved any of your files in 2010, you will not be able to open them in 2009 whatsoever, unless you write it back to parasolid/step etc.
But that way you will lose all feature history.
Welcome to SW forums Matt.
Though you can install 2009 by completely uninstalling SW2010 and then reinstalling SW2009 (though you may to face issues as Andy stated) I would like to know why you want to do that. And what if you can keep both the version.
Thanks for all the replies.
It would be great if I could keep both versions of SW, if not, then I can work on 2010 only, as I have some projects already completed using 2010, and I don't wish to loose them, or not be able to edit them.
The reason for wanting 2009 back is that the work I'm doing now is required to be in the 2009 format, and I'm not completely sure if the 2010 version is different in that aspect (guess I should've asked that first), or whether or not it is accepted.
If you talk of UI there is not much changes but yes with SW2010 there has been some good enhancements (check what's new pdf). But you need to the data to be in SW2009, you'll have to recreate every single file in SW2009 which you have done in SW2010.
You can have both SW2009 and SW2010 installed on the same computer. You have to pay very close attention when you install to make sure they end up in different directories.
I have SW2008 and SW2010 installed on my computer at work. I use them both daily.