LUKECOMINS  This wee app has always been terrific! Why Mac doesn't give us options to make these changes to our dock in the actual 'Dock Preferences' I really don't know... I have made use of TranspDock on all my Macs over the last however many years BUT please note - there is still no MacOS Intel compatible version available. You mention that "Verison 2.3.9 updated for compatibility with Mac OS X Tiger 10.4.8" but do not state that it is for PowerPC only, and not the Intel Macs...

Come on Free Range® and do the homework so we can have our beloved Transparent Dock once again.

Long live transparent docks! (take note Apple!)  
(Version 2.3.9)