I am running XP SP-3, 32 Bit.  I have a small program with the .msi file extension that I can't open.  Any suggestions?

I have used RegVac to check and clean my registry.  Any query posted through Goggle yields sellers of registry clean-up programs.

I did find a potential solution at http://www . giveawayoftheday.com/forums/topic/1718. At the end of that string is code, with instructions to copy & paste into a notepad file, save as " setupmsi.reg "  Once that is done, double click and save to your registry.

I'm not sure how to do that, and not confident enough to start messing with my registry.

Any suggestions?

   The .msi file is a Microsoft installation file.  When you double click on the .msi file, the Microsoft installer program should start and run the .msi file.  If your associations in Windows are messed up or missing for the .msi extention, double clicking on the file will not start the Microsoft Installer.
   I assume what the setupmsi.reg file does is write the association for .msi into your registry.  Here are more detailed instructions on making the setupmsi.reg file work.

• Select (highlight) the setupmsi.reg text on that webpage.  Right click on the selection and select Copy from the popup menu.
  
• Open notepad.  If it is not blank, go to the File menu and select New.
  
• Go to the Edit menu and select Paste.  This should paste the setupmsi.reg text into your Notepad file.
  
• Go to the File menu and select Save As...  The Save As box will open.  In the Save as type dropdown box, select All Files.  Find a place that you will easily be able to find later and go there.  In the File name box, type "setupmsi.reg" and click on the Save button.  Your setupmsi.reg file is created.  You can close Notepad.
  
• Now right click on the Start button on your Windows desktop and select Explore from the popup menu.  This will start Windows Explorer which is much like the Save As box you were at before.  Find the setupmsi.reg file you created.  If it has a .txt ending, rename it so that the ending is .reg
  
• Double click on the setupmsi.reg file.  That should enter the association information for .msi into the registry.  Now you should be able to double click on the .msi file and it work.
  

Thank you!  That was step-by-step, and I appreciate that!  It's working now!!!