Here is how you can suck down an excel file from Google Shared Documents. What are Google Shared Documents? It's Google's free tool to let you share a Word or Excel document online with a contributor(s) of your choosing. You must have a gmail account to take advantage of this, but a gmail account is harmless. Go get one. If you make edits to it on your computer, and want to upload your edited version to replace the shared file online, you can go into File (same File as mentioned below) and "Upload new version..."
Let's get started.
Log into gmail.
Click on Documents at the very top left of the screen.
Click on the file you want to view.
On the next screen, to the far left, next to the tabs, there is a pull down menu called "File". Click on it, and you will be presented with options.
Select "Export". It will ask you what kind of file you want it in.
Select .xls (this is an Excel file).
The file will zoom onto your desktop.