how can I edit the autocomplete list so that my wife will not see
where I have been looking.  ( ex: I would not like her to see the
phrase flowers.com accidentally when she types the letter "F" as I am
operating under the presumption of always picking out the arrangement
myself at the flower store)

Its a setting on your browser that needs to be adjusted.  Here are the
instructions.

Adjusting AutoComplete Settings
To modify your settings for the AutoComplete feature or clear all
items from the list of form or password suggestions, follow these
steps in Internet Explorer:
On the Tools menu, click Internet Options.
Click the Content tab.
Click AutoComplete.
Click the appropriate AutoComplete check boxes, or click Clear Forms
or Clear Passwords to clear all saved items from the appropriate
AutoComplete history.
Click OK, and then click OK.

More info at:
http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q217148&