There's a nice little extension for OpenOffice.org that lets you quickly upload your document to your googledocs account. Click here to get it.
Installing the extension gives you this toolbar, as well as a Google Docs menu.
Your document will be automatically uploaded to your account in Google. It works pretty nicely.
Installing extensions is pretty easy. Download the extension. Then choose Tools > Extension Manager. Select My Extensions and click Add.
Find the extension file you downloaded, an installation process runs, and you’ll see Enabled next to the extension. For some extensions, you’ll need to restart. Look for a new menu, new menu items, new toolbars, or all three.