Does anyone know how to replace a color in Photoshop with another? I have an image on a black background and I want to change it to a greyish background. Photoshop 5.0 if it matters. Well there is few ...

Photoshop, GIMP, etc. should be on the top of your list when it comes to a professional image editing tool to do certain changes including brightness/contrast adjustment, special effects and more.