When I start my computer I get this error message..."Click the program
you want to use to open MSACNV30.dll".  Any idea what it means and how
to correct it?

If you are using MSAccess from Office 95 and the default installation
path is c:\Msoffice95\Access, In that case there is a possibility A
folder name in the path for Microsoft Access is longer than 8
characters, for example, c:\Msoffice95\Access

To resolve this, run the Microsoft Access Setup program (Setup.exe) to
uninstall Microsoft Access. Then, run Setup again, and install
Microsoft Access in a new folder with a name of 8 characters or fewer.

Did you check your startup folder (Start>>All Programs>>Startup)? What
programs are listed there?

Now, check the programs listed in your registry that are run when
Windows starts up. Here's how to check that. Run regedit.exe and check
this key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

If you cannot determine why this dll is being accessed then post
screenshots of your startup files and registry files. That will be
helpful for us to diagnose.