I am using Windows XP-Pro and comcast.net.  I need to clear my drop
down alphabetical boxes.  How do I do this? Your help would be
appreciated.

I assume that when you say "drop down alphabetical boxes," you are
referring to the "search history" feature in the Google Toolbar,
and/or the "autocomplete" feature in Internet Explorer. While some
computer users find these features to be a convenience, many do not.
Fortunately, it isn't difficult to clear your search history and get
rid of autocomplete.

Below you will find information that will help you to eliminate your
"history" in three ways.

=====================================================================
  ----= TO DELETE YOUR SEARCH HISTORY FROM THE GOOGLE TOOLBAR =----
=====================================================================

Click the little multicolored Google logo (to the left of the search
window) to access the drop-down menu.

Select the 'Clear Search History' option. This will eliminate the
search history, but it will begin to build again unless you take
further action. Here's how to eliminate the Google Toolbar's search
history so that you don't have to clear it after each use:

IF YOU ARE USING GOOGLE TOOLBAR VERSION 1:

Click the Google logo on the Toolbar. Select 'Toolbar Options.' You'll
see three boxes, labeled thus:

 * Keep a search history in a drop-down list under the search box 
 * Preserve the search history across browser sessions 
 * Automatically run a search when you select from the search history 

If you "uncheck" the top box, the one that says "Keep a search
history," the search history feature will be turned off. If, in the
future, you want it back, just click the same box to turn the feature
on again.

IF YOU ARE USING GOOGLE TOOLBAR VERSION 2:

Click the Google logo on the Toolbar. Select 'Options.' Under the
category 'Searching,' find the box labeled 'Drop-down search history.'
Click to "uncheck" it.

=====================================================================
  ----= TO DELETE YOUR SEARCH HISTORY FROM THE GOOGLE HOMEPAGE =----
=====================================================================

This is not done by Google itself, but by a feature of Internet
Explorer called AutoComplete. Here are instruction for turning off
AutoComplete:

Go to the Tools menu in Internet Explorer. 

Select Internet Options. 

Select the Content tab. 

Within the Personal Information area, select 'AutoComplete'. 

Click on 'Clear Forms'. You can also uncheck the 'Forms' box in the
same window to keep this information from being stored in the future.

Alternatively, you can delete individual entries from your search
history by using the down arrow key to select a previous search, then
pressing the Delete key once an unwanted search is highlighted.

=====================================================================
  ----= TO DELETE YOUR SEARCH HISTORY FROM INTERNET EXPLORER =----
=====================================================================

Go to the Tools menu. 

Select Internet Options.

Click the 'General' tab. 

Click the 'Clear History' button. To completely disable the history
function, change the "Days to keep pages in history" to 0 (zero.)

=====================================================================

Here you'll find more information about using the Google Toolbar:

Google Toolbar Help
http://toolbar.google.com/help.html

Google Toolbar FAQ
http://toolbar.google.com/faq.html

=====================================================================

I hope this helps! If any of these instructions are unclear, or if I
have misinterpreted your question, I'll be glad to offer further
assistance before you rate my answer. If you have questions about
anything I've said, just click the button that says "Request Answer
Clarification," and I'll get back to you as soon as I can.

Best wishes,
pinkfreud

Clear, well written answer.  Solved my problem.  Thanks