OpenVPN and Windows Vista updates - autentication with username and password

Because the server guys changed some stuff for the OpenVPN, I was unable to connect ... Uninstalled and installed a new version (stable)... Did not work for me... I have Windows Vista Home Premium installed on my laptop so I don't know if is relevant... Uninstalling the OpenVPN did not go as planned, beacause the TAP adapter remained... Anyway, the solution seems to be the recenly Release Candidate: OpenVPN 2.1_rc13 -- released on 2008.10.09 [download Windows Installer] Now I use OpenVPN without a key, with username and password...