I wrote this small batch file to simplify the initial WordPress core files download.  Basically this batch file does the following:

1. Uses wget to download the latest version of WordPress. (http://wordpress.org/latest.tar.gz)
2. Unzips the .tar.gz and .tar to a /wordpress subdirectory using 7zip
3. Uses ROBOCOPY to move those resulting files up to the current directory and delete the unneeded /wordpress directory.
4. Deletes the .tar.gz and .tar core files.
5. Renames wp-config-sample.php to wp-config.php.

Save these commands in a .bat file or just run them directly in the command window from the directory you’d like to download the WordPress core files to:

wget64 http://wordpress.org/latest.tar.gz
7z e latest.tar.gz & 7z x latest.tar
robocopy wordpress ./ /MOVE /E
del latest.tar
del latest.tar.gz
ren wp-config-sample.php wp-config.php