I checked both downloads at
http://www.gameburnworld.com/gp/gamefixes/stilllife.shtmlThe first one (for version v1.00 of the game) had a readme.
The second one (for version v1.03 of the game) didn't, but looked like it was the same file structure and that you'd install it the same way.
The StillLife.exe file should go in the main game folder.
The following four files should go in the DLL folder, which is in the main game folder.
MCKGUIBlocks.dll
MCKInputBlocks.dll
MCKXboxUtil.dll
StillLife.dll
If you copied the four files to the main game folder instead of to the DLL folder, that could explain why it isn't working.
And of course you need the correct NoCD for your version of the game.
The NoCD for the v1.03 version won't work if you have v1.00 and vice versa.