How do I set the default document size so that when I open a new file it's that size?
I want it 300mm wide and 300mm tall.
I reinstalled Illustrator CS3 and I forgot how to do that.
I remember that you set the dimensions and then you save the file to some template directory, I think.
I forgot the name of the file to save and where I save it to.
I've been searching but I can't find the answer.
It's the New Document Profile you have to save. If you search for this phrase or search for the names of those profiles (Video and Film or such like) you'll find the place to save it to.
Location for the file is "C:\Program Files\Adobe\Adobe Illustrator CS3\Support Files\Required\New Document Profiles" on Windows.
On Mac Right click on the application and select 'Show Package Contents" then go to "Required\New Document Profiles".
For File Name you can provide any name you like.
Those files are Illys defaults. I'd rather not save it there or overwrite these but use the document profiles which are in the user folder -> Library -> Application Support ...