windowsdllcommandsystemdialogextension it won't work for you unless you have some form of Visual Basic tools loaded on your system : COMDLG32.OCX : Common Dialog 

-- this allows you to use code to open up a dialog box ,

 select a file , and the commit that file....

 then some more code will actually run the regsvr32.exe :

 1. Skip this Helper from above

 2. put your DLL file into c:\windows\system 

3. go to RUN or command promt and type : Regsver32.exe c:\windows\system\ Example : Regsver32.exe c:\windows\system\gif89.dll 

 4. that's it 

 5. Windows XP will work

 6. Windows 

7 is a differnt beasty (writting 32bit DLL to 64 Windows7) - place the DLL in the c:\windows\sysWOW64 folder

 - go to accessories and Command Prompt - log on command proimpt as Administrator - from command prompt write full pathway 

- example : c:\windows\sysWOW64\Regsver32.exe c:\windows\sysWOW64\gif89.dll 

 ELSE : 

- be sure to Unregister your half register attempts

 - place an /u inbetween the regsvr32 & the file 

- example : Regsver32.exe /u c:\windows\system\gif89.dll. .

 LAST : - It may be that in the even though you register your DLL

 - your 64-bit program active x controls on your 64-bit computer cannot run the 32-bit DLL anyway