Photoshop Script to Open Folder

Hi, I need a photoshop script that can open all files in a specific folder automatically. No dialog boxes or prompts. I'll need it later in the actions for batch processing. I'd like a script to have the path: "C:\Users\Admin\Desktop\PSD_Files" to get all files from. Files will be .psd only. the shorter, the better. Please name your price and time frame.