The Voting Component formed part of ASP 1.0 and was downloadable separately
from the Microsoft site. By ASP 2.0 it had been removed completely (in fact
it was removed even before ASP 1.0 was obsolete). The reason it was removed
was that it formed part of the Personalization Components and that they
were going to be sold as part of Site Server, so they could no longer be
given away as free.
A quick search of http://www.15seconds.com revealed loads of helpful info.
Check out the info on Quick Voting by Samuel Pickard that's on ASPWatch.