New
#450
Hello Caomhin, and welcome to Seven Forums.
Sorry, but Windows 7 does not have support for the .indd to be opened by any program by default. However, you should be able to right click on a .indd file, and use Open with (click on link for more info) to select the InDesign CS6 program and check Always use the selected program to open this kind of file to do so though. :)
Hope this helps,
Shawn