From reading the user manual for that app, it sounds like it’s not possible:
Quickoffice® allows you to use a WiFi network to transfer documents between your iPad and a desktop
computer … in one of two ways, either by mounting your mobile device as a drive on your computer or by
using the web browser on your computer to communicate with your device. You may also transfer your
files via iTunes using a USB cable.
It also sopports online access to accounts on MobileMe, Dropbox, Google Docs, Box.net, SugarSync, Huddle, Evernote, Egnyte, and Catch.