http://www.islamov.com/diamond/q&a.html#daoinstall

2. How to install DAO 3.5 manually?


You need the following files to install DAO 3.5:

File name 	Location
DAO350.DLL 	C:\Program Files\Common Files\Microsoft Shared\DAO\
DAO2535.TLB 	C:\Program Files\Common Files\Microsoft Shared\DAO\
MSJET35.DLL 	C:\Windows\System\
MSREPL35.DLL 	C:\Windows\System\
MSJTER35.DLL 	C:\Windows\System\
MSJINT35.DLL 	C:\Windows\System\
VBAJET32.DLL 	C:\Windows\System\
VBAR332.DLL 	C:\Windows\System\
VBAEN32.OLB 	C:\Windows\System\
MSVCRT40.DLL 	C:\Windows\System\
MSVCRT.DLL 	C:\Windows\System\
MSVCIRT.DLL 	C:\Windows\System\

Step by step installation of DAO 3.5.

   1. Copy all DAO core files and required additional data formats DLLs to the Windows system folder, except DAO350.DLL and DAO2535.TLB. Windows 95 system folder is Windows\System\ and Windows NT system folder is Windows\System32\.
   2. Copy DAO350.DLL and DAO2535.TLB to the common files directory. Common files directory location can be found in registry at HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion in CommonFilesDir string value. To get full destination path append Microsoft Shared\DAO to value of CommonFilesDir. The destination path should be like C:\Program Files\Common Files\Microsoft Shared\DAO\.
   3. Register all DLLs, which have DllRegisterServer function. DAO350.DLL should be registered at the end. Registration can be done with regsvr32.exe, which is located in Windows\System.
      For example: C:\Windows\System\regsvr32.exe msjet35.dll

After finishing above procedures you will have correct DAO 3.5 installation.