No problem!
I have recently downloaded and installed 3dsmax 2013 and while I don't have a Vista installation on hand the installer did say that Vista was a platform that it could install on. I can test this very soon but I think it's safe to say that it will install just fine along with the other 2013 applications.
Found some new Programs that support Vista!
Video/photo editing software:
Lightworks v14 ($$$, FREE, CS)
Game development software:
CryEngine V ($$$, FREE, OS) Requires SP2
The CryEngine website says that as of CryEngine 5.3 you can only run the editor and game on Windows 7 and up and below it says that Vista SP1 isn't supported. So, previous versions of CryEngine should run just fine and possibly 5.3 runs on Vista SP2 but I will have to test this.
I was going to put Unity 5 on there but the Unity website says that Vista isn't supported but a couple of people have said that they are running Unity 5 on their Vista box. I will have to test this.