I have no personal experience with this, but Google announced a new product yesterday called Google Cloud Connect for Microsoft Office. This provides free add-ins for Word, Excel, and PowerPoint on PCs (only) which allow them to essentially act like Google Apps applications, i.e., 1) when a change is made to a file the change is stored on remote servers more-or-less instantly, and 2) the owner may choose to share the file with others with or without write privileges, allowing collaborative modification in real time, and 3) changes can be seen and effected by Android devices. Sound like something that you could use.
See http://googledocs.blogspot.com/2011/02/google-cloud-connect-for-microsoft.html for a start.
I am an Excel power user, thinking of using an Android Tablet for field work (data entry and interpretation), with pre-designed, complex computational spread sheets.
Who has experience?