Never mind, thanks for looking.
I loaded a different save and got the pip boy notice...



Sorry to be such a new player
I had NV installed on D:\
I tried to install the DLC and it wanted to install to c:\program files, so I changed the path to d:\
Now it's installed and I used the launcher to enable the HH (checkmark)

So now I launch the nv.exe and I get my old game, how do I play the HH game?
(I'm very sorry, I have a ton of icons on my desktop and I can't figure out what the installer added)

thanks in advance.

Were did you get the DLC from?

The install method sounds awkward.

He pirated it,the DLCs auto install when you buy them on steam.

You have to download the DLC from steam and it will auto install for you to whereaver your game is installed. When you select the DLC and start the game you will get the radio broadcast in your PIP BOY. HH starts in the Northern Passage and Dead Money starts in the Abandoned BOS Bunker.

Really?! I'm going to pirate $9.99 worth of game?

Thanks for your help. My original question was mistaken I had been in parallels and things got messed up.
I'm good to go now.