Forgive the basic nature of my question, but I really have searched high and low for step-by-step instructions for upsampling using the 10% increment approach in PS/bicubic smoothing. I even dug through Real World Photoshop CS, to no avail. I have a .tif image currently sized at: 3072x2048 pixels; 17.067"x11.378"; 180 resolution. The images is exposed well and is reasonably sharp. I need to make a cropped 10"x20" print with resolution of 250 dpi, with sharpening done as the last step. In cropping, I won't be taking much from the sides. Assuming I only want to use PS (which I do, so no Genuine Fractals advice, please), the common wisdom seems to be to do this through the document size window, stepping up 10% at a time with bicubic smoother turned on. Ok, exactly how do I do that to reach my desired print size? Again, sorry to be dense, but I mean exactly. Thanks Chris N.