Of course, go to your personal Pro download page, the one you bookmarked. If didn't bookmark it you should in future. Either go to your email customer support sent you with the pro download link, else go to the support page: Lime Wire » Support On your Pro page, you will see a link on the 'left' side of page (opposite side to the basic LW download page), & choose Classic.

Example image: http://www.gnutellaforums.com/attach...e-old-inst.gif