It is probably in many ways similar to "Drivers Pack Unpacker & Installer", haven't seen it in action yet. Major difference is that INF files are scanned before you start using the program and information about drivers are stored in database. This should result in much faster installations.
There are still many things to change and add, but i need some overall feedback.
Download here: http://rapidshare.com/files/114580081/DriverPM.zip.html
How to use:
1. Copy all drivers into "Drivers" folder. Folder structure is not important. 7z format is not supported because it is too slow to extract individual files, if you want to compress drivers - use zip format. Again, folder structure is not important, you can put them anywhere inside "Drivers" folder.
2. Select "Create new database" from main menu. This process will take 3-10 minutes, depending on the amount of drivers you provided.
3. Ready to go. Copy DriverPM folder to USB flash drive (intended use 
) and you can start installing drivers with a single button click.
When selecting network computer, OS version is not checked at the moment. Will be fixed.
Bugs may be present, some code have been changed recently.
ToDo:
Add ways to update database without full rescan.
64-bit support.
Automatic install of bus drivers (like HDAudio).
Options (enabling unsigned drivers etc.)
Programmed in AutoIT (http://www.autoitscript.com/autoit3)
Includes code:
unzip.exe (http://www.info-zip.org/)
sqlite.dll (http://www.sqlite.org/)