BWEL

When you download updates via Windows Update, Windows leave a copy of the CAB file into a folder which CAB Retriever lets you copy to a place of your choice or just delete them to save space. The files you decide to copy can be used to integrate into your WIM image.
A new feature is that it will also scan WindowsUpdate.log for any MSU links which you may want to download.
NOTE: You can only use CAB Retriever if you have *.cab files available to copy.

Option 1: Copy Selected
Using the list, select the files you want to copy. You can also hold the ctrl key to select multiple files. This option will then only copy the selected files to the folder of your choice.
Option 2: Copy All
This will copy all the files in the list to a selected folder
Option 3: Delete Selected
Same as option 1 but this deletes the file from the Windows Update temp folder.
Option 4: Delete All
Same as option 2 but deletes the files from the Windows Update temp folder.
Source Folder
This will take you to the folder containing the actually *.cab files.
Destination Folder
This will take you to the folder where you chose to copy the files to.