How to Fix File Association Errors in Vista

1. Click the circular 'Windows' orb logo in the bottom-left corner of the desktop. Type 'Default Programs' in the search box at the bottom of the 'Start' menu. Press 'Enter' to open the 'Default Programs' window.
2. Click 'Associate a File Type or Protocol With a Program.' Wait while Windows Vista compiles a list of programs on the PC.
3. Find the file either by its extension under the 'Name' column or by the file's title under the 'Description' column.
4. Click the file's extension/title once to highlight it in blue. Click the 'Change Program' button, which opens another dialog box.
5. Double-click on a program's icon in the 'Recommended Programs' section, if it is listed. Otherwise, click 'Browse,' which opens another dialog box showing the 'Program Files' folder. Open a program's folder and then double-click on the 'Application' file (usually ending in '.exe' for executable) within that folder. Click 'OK' in the dialog box.