I don't know what to do once I click on that link... I have installed gtk engines before, so if you direct me on what to click and I get the source file I should be fine from there... or your theme is broken. I downloaded the only murrine engine I could find on that page and installed it, and it still doesn't work.

1: Open synaptic. ( System > Administration > Synaptic Package Manager )
2: Go to the "settings" menu and click "Repositories".
3: Click the "Third-Party Software" tab then click the "Add" button.
4: In the text entry field marked "APT Line:" copy/paste the "apt sources.list entries" that are near the top of the web site I linked one at a time, repeat for the second line.
5: Close the "Software Sources" window, read and dismiss any dialogs, and click the "Reload" button at the top of Synaptic.
6: Search for "gtk2-engines-murrine". You will probably have two or three versions available but you will see only the highest one, select it and click "Package > Force Version" in the window menu.
7: The window that pops up will have a drop-down list of versions you can choose, pick the SVN version from (ppa.launchpad.net) then click the "Force Version" button.
8: Click the "Apply" button and wait, when done reapply the theme and it should work.

Steps 1-5 are the GUI way of adding repositories and, 6-7 are the GUI way of overriding a package version.

The CVS murrine engine has a mathematically lower version than the "official" packages. ( 0.53.1+svn20080529 as opposed to 0.53.1-1ubuntu2. The "1" after the "53.1" part makes the official version higher and is why the lone package you installed did not work. )

Thanks a lot... the first time through I was really tired, and didn't notice that those links were actually software sources... duh! I didn't know about the whole force version though. It works now, thank you very much.

It took me awhile too, after adding the repo, to figure out that it needed the override.

Well, not mathematically but you get what I mean.:P

As a show of features, it's nice.. But rather horrid as a theme.

OK, What is so bad about it and what are your ideas on how I can make it better?

I am at your service.