Evil Client v1.5.1
Some minor fixes made it into the new version. First of all, the --reconnect command line switch now uses a possibly specified reconnect delay, so the EC is better suited for scripting. Other than that, the setup is now multi user aware, which means that it detects if the current user has Administrator rights. If that's the case, an option appears to install the shortcuts for all users, otherwise only shortcuts for the current user are created. Keep in mind though, that you might need to clear your EC configuration (found under %APPDATA%\Evil Client\) manually when uninstalling with Administrator rights, because the uninstaller will only be able to remove the configuration for the user which is currently executing the uninstaller. So this issue only appears when you're using the EC from a restricted account, but install from an Admin account (applies to XP and Vista). If you have Administrator rights on Vista however, UAC jumps in and the current user is elevated.
Although this solution is probably not 100% satisfactory, it basically resembles the situation you have under any *nix based system, where the super user installs applications and all the user data reside in the respective home dirs. If you've any suggestions, pls let me know.