Hello jdk1 and welcome to Wilders and the Official Prevx Support Forum I'm sorry, but SlimBrowser is not supported by Prevx SafeOnline, at least officially, and only the 4 widely-used browsers (IE, Chrome, FF, Opera) are supported, as seen here: http://info.prevx.com/safehelp.asp#xtechnical If you haven't yet purchased Prevx, I'd recommend instead that you try SecureAnywhere, which is basically Prevx 3.0's successor, as Prevx were acquired by Webroot in Nov 2010. You could run a trial if you'd like to sample it http://www.webroot.com/customerSupport/trialRegistration.php?trpd=WSAE&loc=USA Some threads that you may like to investigate: https://www.wilderssecurity.com/showthread.php?t=318825 https://www.wilderssecurity.com/showthread.php?t=322616 In any case, whatever you decide, you can be sure of good support, information and help here whenever needed. Good luck, Dermot