The DDE Interface (app143) of the µVision2 Debugger doesn't work!

According the app143 note, I execute the dswdde.exe file, butit doesnt work!
Is there something I must set before executing the file?
I try the dswdde.exe file on Windows 2000 and Win XP,but both doesnt work!
Hope someone can help me!I am going to crazy!thanks!!

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