The LCARS stuff are for DesktopX. You can download the shareware version here: http://www.desktopx.net
If the file ends in a .dxpack extension, then the file contains one or more DesktopX objects (for example an animated icon which are often called "zoomers").
If the file ends in a .dxtheme extension, then the file contains an entire dx theme (which itself is contains a whole bunch of DesktopX objects, wallpaper and so on).
WinStyles is an application that that applies themes for other apps automatically all at once. You still need the other applications installed for it to work.
For instance, the WindowBlinds program is used to skin the standard Windows elements (titlebars, scrollbars...). IconPackger is used to install icons.
ObjectBar is used to install and display objectbar themes (which are usually taskbar menubar replacements).
So imagine you had a fancy desktop setup that used WindowBlinds,IconPackager,ObjectBar and DesktopX themes.
If you wanted to change the enitire setup, you would have to go to WindowBlinds config and pick a new skin, then use IconPackager and its config to load up a new bunch of icons, and so on...)
With Winstyles all the various skins are collected under a WinStyles suite or theme file. Then with the click of a button Winstyles will automatically apply these skins to WindowBlinds,IconPackager,ObjectBar,DesktopX,...). It automates the process of applying skins for you.