How do I play .cohdemo files from explorer?

I'm familiar with demo recording.
In the good ol' days of Windows XP, it was quite simple to set up a proper file association to play .cohdemo files by just right-clicking on them. Just open the "open with" dialog, create an action with adding the -playdemo switch to the CoH executable, and perhaps a -screen switch to make it run in a resolution of my choice.

But I can't make it in Windows 7, since they did Paris Hilton the "open with" dialog, and no longer allow me to specify command switches. In addition, it seem like the CoH executable nowadays take the filename without the .cohdemo suffix as input, instead of the full filename with full path. While I can start a CMD.exe in the CoH directory, and just type "cityofheroes.exe -demoplay name_of_demo", I strongly prefer to just right-click the file in explorer and choose "Play at 1280x1024" or whatever I named the action.

So the question is: Can I play .cohdemo files from explorer in Windows 7, as I could in good ol' Windows XP?

Well, I made it by creating a .bat file with this content:

cd "C:\Program Files (x86)\Spel\City of Heroes"
cityofheroes.exe -screen 1280 1024 -demoplay %1

Does Zloth's Demo Launcher work under Win7? Have you tried that?