I have updated CTAN:/tex-archive/biblio/bibtex/utils/bibweb to the current version on the author's website (dated Nov 10, 2000).
From the README file:
----------------------------------------------------------------------- bibweb is a utility for automatically retrieving bibliographical information from the American Mathematical Society's MathSciNet program. John Palmieri (engineer) wrote bibweb, and Bill Dwyer (idea man) helped to design it.
If you're too lazy to go to the library or use a web browser to find out bibliographical information for that ground-breaking paper you're writing, you can let bibweb do the work for you. You have to use bibtex (which means you have to use latex, I think), and you have to write citations in a particular format, but that's about it. -----------------------------------------------------------------------
Reinhard Zierke for the CTAN team