The problem is that you are missing the msvbvm50.dll file that MS no longer ships with Windows. Just download it and put it in the OCDB folder. It is widely available, including from Microsoft. Don't forget to run the OCDB installer in WinXP(SP3) compatibility mode. If this isn't enough to make it work, copy the file ENCRYPTER.OCX from a sub folder of your Windows folder to your OCDB folder. I can't recall the folder name, but a search will locate it easily. It's possible that it isn't properly registered, which isn't needed if it is locally available. Doing this fix, I have OCDB running just fine on my new Win7 64-bit desktop.