hi, I need some help to do the following: i want to use a unique authentication/logon process for Windows XP (instead of the original Windows logon). This means that before the logon dialog box appears i want to use my own authentication mechanism (It uses USB drive as a hardware key, in combination with free software tools and asymmetric cryptography with a radius server.) If the authentication fails, /for example no USB drive/ the original logon dialog box should appear. Well, some of the main questions are i think: - how can i execute my own logon application before the windows logon dialog box appears? (maybe as a service??) - if the logon succeed, how can i step over the original logon dialog box and go straight to the desktop? thx any help in advance -- 3iron3 Posted via http://www.xpheads.com