Assign proper application to OPEN .ad4 files

[bigbozo]

I want to open some files like myfilename.ad4.

But...........I have Adobe reader installed.

Adobe reader appears to define itself as the application to load these files (ad?).

I have my security permissions as both administrator and only user set to allow almost anything.

I have an application (Airport Design Editor) which WILL open these files, but I browse, find, and then
cannot fix the application to replace the Adobe program.

Thoughts?

 

[DavidE]

See if this tutorial by Brink helps:
http://www.sevenforums.com/tutorials/9154-default-programs-associate-file-type-protocol.html