>How do I fully unregister a dll? I used "RegSvr32 /u mydll.dll" and I got a message box saying the dll was successfully unregistered but in my VB project that is referencing this dll still displays it as referencable.
>
>I need to cleanly get rid of any trace of this particular dll in order that I could install a remote copy of this same dll. TIA.

If the DLL still exists on the path it may still show as valid. But try doing a CreateObject() in another project without referencing it, see if that works. It shouldn't if Regsvr32 did its job.

HTH