ClamWin portable it is not really portable

I got your point, it is right. But please consider that a lot of people (me included) use portable apps from usb keys but also from hard drives, _instead_ of the counterpart installed apps. I do that regularly. In this way I have almost all my programs with their setting in another partition always at hand, even if I change workstation or restore a previous image of Windows with tools like TrueImage. The only thing that I have to do after restoring an image is to put links to portable apps that resides in another partition in autostart folder, and I am done. I do it for example for Launchy, portable Lingoes and so on. It would be nice to have such a support for ClamTray. Regarding Firefox and Thunderbird, I use the installed versions (because I like to register them as default applications for corresponding functions) but relocate their profiles on another partition. I do it since Firefox 0.6 if there would be a way to register / de-register them as default application from a Portable apps menu I could use portable versions. I understand that this is a somewhat extended reading of of portable application concept , but I think that a lot of users could find it really useful.