By Scott ClarkIndustry standard graphic software for professionals Photoshop is feature-rich--basically a darkroom in a software package--and enables those who know it well to create professional looking graphics for presentations, advertising, magazines, newspapers, and now, Web pages. The tool includes support for transparent, interlaced GIF files, Portable Network Graphics (PNG), Progressive JPEG and Adobe's own Portable Document Format (PDF). Adobe Photoshop 4.0 www.adobe.comSystem Requirements Windows 3.1, 95/NT or Macintosh, Power Macintosh 486 or higher processor 16MB RAM (32MB Recommended) 25MB hard disk space, CD-ROM drive, 256-color display adapter (24-bit recommended) Price Photoshop 4.0: $895, upgrade from LE: $249.99, standard upgrade: $179.99 Free Windows Trial Version, Free Mac Trial Version