but that's all you can do, it doesn't give you the ability to create or edit PDF files, never mind collaborate on them. Creation-only utilities provide no viewing, editing or security. License Pricing: Academic, Online Validation Processor: Intel Pentium or higher or equivalent Operating System: Wndows XP with Service Pack 3 (32-bit) Windows Vista with Service Pack 1 (32/64-bit) Hard Disk: 500 MB for application files plus 150 MB working space during installation Memory: 256 MB RAM 512 MB RAM Recommended Optical Drive: CD-ROM for installation Others: SVGA monitor with 256 colors, but preferably 16-bit color (called Medium Color in XP) and 800 x 600 pixel resolution Sound card is optionally required for using the functionality of the supplied Text-To-Speech engine Windows-compatible pointing device Microsoft Internet Explorer 6 or above Web access needed for product registration, activation, and obtaining live updates for the program Note: Performance and speed will be enhanced if your computer’s processor, memory and available disk space exceed minimum requirements PDF conversion features PDF editing and viewing features PDF creation features PDF compatibility features PDF security features PDF form features Software M109A-F02-6.0 CD-ROM English 1 User Complete Product Nuance Communications, Inc PDF Converter v.6.0 Professional - Educational License Program PDF Conversion/Viewing Productivity Application PC Nuance Retail PDF Converter v.6.0 Professional - Educational License Program - Complete Product Windows  (less)