If you have Photoshop, load your stone texture, then create a new layer over it. Set your foreground color to white, your background color to black and go Filter: Render: Clouds. Then change that layer to multiply or overlay and reduce the opacity down. This will give an uneven, streaked dirtiness to the layer below. Save this as a new texture. Now your floor stone will look different from your wall texture, and it will be dirtier. You can also try using white and brown for your colors for a more earth-dirt effect. I'm sure PSP would have something similar, but I'm a novice at PSP. Hope this helps, Cres