I use documents to go on both my droid phone and my iPad. You do not need documents to go on your pc if you have an MS Office. Next I downloaded DropBox on my pc, droid and iPad. Within DropBox there is a feature on the iPad to open in Documents to go. You can also open documents that are on the iPad or in the DropBox directory from within documents to do. On my pc DropBox is a desktop icon which opens like a file explored. You just open the documents you wish to use and MS Office opens the appropriate application. On my droid I can open documents doing the same process used on the iPad from documents to go or DropBoxs file structure. The android and iPad documents to go application are a bit different so you will have to play with them a bit. This system works great. I can create a document on my droid, open it later on my iPad and still later using my notebook, net book or desk top save it to my network drive for security backups. Very cool!