Illustrator: Convert any colors into Pantone colors in Illustrator & Photoshop

It often happens that after you create your designs, especially a logo or the work that you need to print, the color swatch of which are either in CMYK or RGB & you want to convert it in Pantone colors. Converting the colors from any mode (i.e RGB, CMYK, HSB) inot Pantone colors is now very easy to do with Illustrator CS3, let me tell you how to do that!! And, I will also tell you how to do that in Photoshop as well!!