You should utilize the registry editor to associate file types with applications.

Sure, here are the steps to associate file types with applications using the registry editor:

1. Press Win + R to open the Run dialog box. Type regedit and press Enter to open the Registry Editor.

2. Navigate to HKEY_CLASSES_ROOT.

3. Scroll down and find the file extension you want to change the association for, then click on it.

4. In the right pane, double-click on (Default). In the Value data field, type the name of the application you want to use to open this type of file, then click OK.

5. If the application is not listed, you may need to navigate to HKEY_CLASSES_ROOT\Applications and find it there. If it's not there, you'll need to install the application first.

6. Close the Registry Editor and restart your computer for the changes to take effect.

Please note that editing the registry can be risky, and it can cause irreversible damage to your installation if you don't do it correctly. It's recommended to make a full backup of your computer before proceeding.