I use Word 97 a lot each day to create and edit multiple documents. I
always have at least three documents open at once and am growing tired
of clicking the Window button, then scrolling down to the document I
want to switch to.

Do you know of an add-on for Word that will put tabs of my open
documens on-screen so I can one-click to get to another document?

Hi holstein:

Thanks for the interesting question. I've also noticed how annoying it
is to work with multiple documents in Word.

I was able to find the following program that should do the trick for
you.


WinTabs
*******

Description: "WinTabs is a little program that makes it easier to
access multiple documents while using various Windows programs. It
adds to the caption bar a series of tabs, each representing an open
document. With each new document you open, a new tab is added. To
change active document, you only have to click on the document tab."

Cost: (Functionally Limited) Trial version is free, full product
registration is $14.95. However, some sources say the free version is
more than enough for their needs.

Advantages: Works with dozens of Windows programs, not just Word 97. 

URLs:
Details: http://17slon.com/gp/wintabs/
Compatibility: http://17slon.com/gp/wintabs/docs.htm#supported
Download: http://17slon.com/gp/wintabs/files.htm
Register: http://17slon.com/gp/wintabs/register.htm

Reviews: 

PCWorld  
http://www.pcworld.com/downloads/file_description/0,fid,21440,00.asp
http://www.pcworld.com/resource/printable/article/0,aid,91324,00.asp

5-Star Shareware
http://www.5star-shareware.com/Business/MS-OfficeAdd-Ins/wintabs.html

Web Marketing Starter
http://samira.com.pl/software.html

I hope this helps! 

If you need any clarification of the information I have provided,
please ask using the Clarification feature and provide me with
additional details as to what you are looking for. As well, please
allow me to provide you with clarification(s) *before* you rate this
answer.
 
Thank you.  
 
websearcher-ga 
 
Search Strategy:

"word 97" "multiple documents" "add ons" OR "add ins" -consolidate
-combine -indexes
://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&safe=off&q=%22word+97%22+%22multiple+documents%22+%22add+ons%22+OR+%22add+ins%22+-consolidate+-combine+-indexes

WinTabs
://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&safe=off&q=WinTabs

WinTabs review
://www.google.com/search?q=WinTabs+review&hl=en&lr=&ie=ISO-8859-1&safe=off

You may be interested in knowing about a nifty Word keyboard shortcut:
 Pressing Control and F6 simultaneously will cycle to the next open
Word Document.  The Control+F6 trick works in Office 97 and 2000.

(In 2000, each open document is shown separately on the task bar, so
you can use the task switcher to change too ALT + TAB )

This shortcut and others for Word 97 can be found here:
http://www.cctglobal.com/systems.html

I found this page using google, with search terms:
office 97 undocumented tricks

Hope this helps