Dumb Question - The Difference of these Three Downloads?



The differences of these three downloads?

1) Install_MSN_Messenger_7.0.0813.exe (10,528 KB)

2) mmssetup.exe (979 KB)
http://messenger.msn.com/Help/Upgrades.aspx#Q3t

3) INSTALL_MSN_MESSENGER_DL.EXE (7,193 KB)
http://messenger.msn.com/Download/
(Download and Install later)



Thanks


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