Compile Error - Can't find project or library

I'm getting a compile error as follows - "can't find project or library". Then it references:
C:\Program Files\Common Files\System\ado\msado25.tlb.

But, when I browse to that location the msado.tlb is there. I've downloaded MDAC 2.5 sp 3 from MSDN and tried reinstall it, but Windows won't let me because it says it is already installed. I could uninstall and reinstall it, but I don't think it will do any good.

Can someone please help?

Open the .vbp file in notepad and delete the line that references the old .TLB. Then, re-open the project in the VB IDE and the add the .TLB back in as a reference to the project.

I tried what you suggested and I'm still getting the same error.

Any more ideas?