Wise move. I cannot imagine having to administer Windows on a tablet.
Files Connect -- The swiss army knife of remote file connect
https://itunes.apple.com/us/app/files-connect/id404324302?mt=8
Configure WebDave on your server.
This thread has good info.
https://discussions.apple.com/thread/3708341?tstart=0
How to transfer files from your iPad to your PC with iPad to Computer Transfer
http://www.iphone-mac.com/how-to-transfer-and-sync-contents-from-ipad-to-pc.html
More ways to transfer files and access Word documents:
https://discussions.apple.com/thread/4044866?tstart=0
All of the "Office" document editing applications on the iPad have limitations. Best try them out to see if they meet your needs.
iWork by Apple
* Keynote
* Numbers
* Pages
DocsToGo
• VIEW/EDIT/CREATE Word & Excel files(Office 2007/2008/2010)
• VIEW PowerPoint, PDF, iWork, Text, .RTF, and more!
• Send & receive attached supported documents using the built-in Mail app
• FREE desktop application with your purchase! Compatible on Win & Mac allows you 2-way file sync with a WIFI connection.
• Open & Edit files within DocsToGo from any 3rd party app that supports the “Open In” feature
• Supports iTunes File Sharing via USB cable for manually moving files
https://itunes.apple.com/us/app/documents-to-go-office-suite/id317117961?mt=8
Office² HD
"Office² HD, the most intuitive and straightforward office document editor available on the iPad, makes it easy to open, view, create and edit Word (DOC & DOCX), Excel (XLS & XLSX), and PowerPoint (PPT & PPTX) files right from your iPad!"
https://itunes.apple.com/us/app/office2-hd/id364361728?mt=8
Quickoffice Pro HD
Create and edit ALL Microsoft® Office -- document, spreadsheet, and presentation formats, as well as view PDF files, on the go. Our advanced file manager lets you manage local files, access Google Drive or other cloud accounts, and works with your iPad email attachments so you can work anywhere, anytime - online and offline.
https://itunes.apple.com/us/app/quickoffice-pro-hd-edit-office/id376212724?mt=8