Usage:
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Extract the archive with an actual version of 7zip.
Copy the included Data folder over the existing in your ..Bethesda SoftworksFallout 3 game folder. Confirm overwrite information with "YES, ALL".
Open the ArchiveInvalidation.txt file and copy the entries in your own in ..Bethesda SoftworksFallout 3 game folder. If you havn't any ArchiveInvalidation.txt yet, use the whole .txt file and copy it into the game folder.

If not done yet, change the following in your My filesMy GamesFallout 3Fallout.ini:
bInvalidateOlderFiles=0 > set to 1 and save the .ini.

Uninstall:
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Remove the follwoing files from your ArchivInvaliditions.txt and your Fallout folder
meshescharacters_malefemaleupperbody.nif
texturesMaloNudeBodyupperbodyfemale.dds
texturesMaloNudeBodyupperbodyfemale_n.dds
texturesMaloNudeBodyupperbodyfemale_sk.dds