Way to use count() and LIMIT?

Is there a way to structure a query so you can only run 1 query, get the
full number of rows that would be returned, but then use LIMIT to step
through in groups of 20? For example, a search in my CD's/Rock section
will return 53,000 results. I want to give the user the number of total
results, but also use LIMIT to go through 20 at a time? Does this
require 2 queries? Thanks,

Joe