Windows 8 has DISM included for management of your VHD or WIM files. There is no need for downloading the WAIK first.
I tried using it for updating my own drivers in an automatic way. If you have a Dell laptop, you can download a CAB file with all your drivers from Dell TechCenter
After downloading the file i learned that DISM on my Windows 8 64 Bit laptop is actually a 32 bit version. Why is this?