Need script to check for duplicate file names when copying a folder

Hello,
I am a new applescript user trying to write what I believe should be a simple script. I was planning on using the "add-new item alert" script as a template.
Basically I have people copying folders of photos into a library folder, but I don't want the Finder to copy the photo if it already exists in the library. The images in the library are organized into subfolders.
I need a script that will check all the file names in the new folder against all the file names in the library, and NOT add the new one if it already exists.
If anyone can help it would be greatly appreciated,
Thanks,
C

I have a script that "kind of" works. The only problem I've seen is that it gets confused when filenames contain characters that are fine in Macland but not good in Unixland. Forward slashes are a good example of this.
In this case I have a folder in my home named "copytest" Inside copytest are two folders:
Source (containing the images to be added)
Dest (My existing library of images)
It also assumes that the folder of images to be added contains no sub-folders. Hope this helps.
tell application "Finder"
set theSource to folder "source" of folder "copytest" of home
set imagesToBeCopied to name of every file of theSource
end tell
repeat with theFile in imagesToBeCopied
try
if (do shell script "find -r ~/copytest/dest -name " & quoted form of (theFile as string)) is not equal to "" then
--The file exists. Don't copy it
else
--the file doesn't already exist. Copy it.
end if
on error
return "Failed while trying to check for existence of a file"
end try
end repeat

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Hi
Since SQL Server 2000 has been out of support, I recommend you to upgrade the SQL Server 2000 to a higher version, such as SQL Server 2005 or SQL Server 2008.
According to your description, you can try the following methods to check duplicate record in SQL Server.
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iTunes: Troubleshooting issues with third-party iTunes plug-ins
http://support.apple.com/kb/ts3430
There are several ways an add-on can cause iTunes to act erratically, such as those listed below:
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