Don't know of any way to do this. If you are using checkboxes from the forms
toolbar, they follow the Windows convention of checking / unchecking when
the spacebar is pressed.

Signature
There are a number of ways to handle checkboxes in documents / templates.
Take a look at the Checkbox template available at <URL:
http://addbalance.com/word/download.htm> for an exploration of these.
--
Charles Kenyon
Word New User FAQ & Web Directory:
<URL: http://addbalance.com/word/index.htm>
Intermediate User's Guide to Microsoft Word (supplemented version of
Microsoft's Legal Users' Guide)
<URL: http://addbalance.com/usersguide/index.htm>
See also the MVP FAQ: <URL: http://www.mvps.org/word/> which is awesome!
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from my ignorance and your wisdom.
> Hi, I would like to place some boxes within a survey document and have then
> either tick or cross (or Y or N) appear when the Enter key is hit (or Y/N
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>
> Stephen