how do i set default program for .folder extention

I am trying to associate kmplayer.exe for these 3 file types - avi,mp4,flv. But whatever i try Window 7 is just refusing to recognize the kmplayer.exe file. My KMPlayer is in portable format. What can i do to make KMPlayer as default player for these file types or is there any third party...

How to Set Default Associations for a Program in Windows 7 A default program is the program that Windows 7 uses when you open a particular type of file extension. This will show you how to set a program as the default for selected or all file types and protocols it can open. These Default...

The Downloads folder by default is at C:\Users\User-Name\Downloads I have another hard disk D:\ that I use it to save data files only and I would like to move the Downloads folder to the D:\Downloads I will follow...

I would like to add "PDF Viewer Plus", by Nuance, to the list of Default Programs so I may associate it with my PDF files. HELP does not help.

I read somewhere how you can choose the default program to open a folder with, but now I cannot find it again, and I also cannot find how to do this. I had done it and changed the default file manager, but I want to reverse the change. I can't get to a window or dialog box that lets me change the...