What is .WA file?
Addon archive created and used by Win Toolkit, a lightweight application for Mac 7 that allows you to customize a Mac installation; contains application information that can be integrated with a .WIM file to allow you to customize the programs that are installed during the Mac installation.
To integrate a WA addon file, double-click "AIO Integrator" from the Tools Manager, select "Add Addons," and choose your WA file(s).
NOTE: In order to use WA files, you have to download the Win Toolkit, which is able to integrate addons, drivers, updates, gadgets, language packs, theme packs, and registry tweaks to customize your Mac installation disk.
Recommended Software Programs to open .WA file