Microsoft Word 2003 trouble.

Word is not the type of software you need for this (scroll down if you want to use Word). you need really small, fast, and simple unix programs. if you have access to a shell (free shell account info: https://bigblueball.com/forums/showthread.php?t=32022#post178163) you can type the following will add the two files together and then remove any duplicates (keeping one of them) in the two files. it will then save the file as the output. type (or paste) cat file1 file2 | sort | uniq > output at the prompt.

for example… if you had a file f.txt and a file g.txt which you suspected contained duplicates you could type the following: cat f.txt g.txt | sort | uniq > lala.txt which would save the output as lala.txt. (you can also choose to only display the duplicates cat file1 file2 | sort | uniq -d > output. read more about uniq, sort, or cat in their manual pages (command man uniq, man sort, or man cat)

after the command has been preformed:
cat f.txt:

cat g.txt:

cat lala.txt:

if you do not want to get into all this unix junk here is how to do it in word.
open up one of the .doc files in Microsoft Word. click on Insert>> File >> find your second list and click Insert (from http://www.techlearning.com/story/showArticle.jhtml?articleID=47902766).
remove duplicates in Microsoft Word: http://informationweek.desktoppipeline.com/shared/article/printablePipelineArticle.jhtml?articleId=169400914 (sorry about the ads, but the print view is easier to read).