I believe there are 2 versions of it. One is a docklet (version 1.0)to be installed within the Object Dock directory as normal - this has to be paid for at about 9 euro's. The version I have is 2.8 and I think it was from a time when this program was freeware. This 2.8 version is an .exe, so you shortcut to it and then use the arguments to load an .ini file which contains the menu configuaration and also the skin .ini. These ini's are created either with the packaged Menu Editor program or can be hand typed in notepad and saved as .ini. I am not a programmer or very clever with pc software, but I managed to learn to write a menu in notepad just by common sense and copying the included .ini sample menu's.
It certainly isn't as good as the start menu docklet, but it is very cool (if a little tempermental sometimes) and unbeatable for custom menu's - you can even assign custom icons within the menus. The mac skin looks very cool too, nicely done.
Unfortunately I cannot remember where I got the link for the 2.8 version, but it is out there and FREE! No way I'm paying for a docklet!! It comes with help files, menu editor, skin editor and sample menu ini's. Get this one if you can - not the docklet. It doesn't have the tray program with it either which is good because that is buggy and you have to manually edit your registry to get rid of it. Persevere and you will have a great custom menu. I got pissed with it at times as well!