Just for your reference, I was trying to add ez_b.dll to MS VB Express. It poped up a window shows "Could not load file or assembly 'Microsoft.DirectX' or one of its dependencies". You need to install Managed Direct X, which you can find here.
sims.ambertation.de/files/mdxredist.msi
The problem may only apprear to XP user.
This and a couple more important pieces of info are mentioned in the READ ME file.
yea my bad. Missed the whole Readme file.