Hi there, LeAnne.

Welcome to RetouchPRO.
My little JPEG clean-up is not a stand-alone and also not a plug-in - it is an
action.
An action is a sequence of steps that you do often in Photoshop and can record them as a little "program" to save time. If you do a search on this site you'll probably find detailed instructions as to the how's and why's, so in short...
- Unzip, now you should see a file called "
byRo JPEG Clean-Up.atn";
- Extract this to the folder ".....\Adobe\Photoshop xxx\Presets\Photoshop Actions;
- In Photoshop find the actions palette <F9> should do it (it's usually together with History and Tool Presets;
- To the right of the tabs there's a little round button, press this and you get a fly-out menu;
- Select "Load Actions...." and load the action;
- Find the new action on the action palette and hit the little play button at the bottom of the palette.
(that was short?)
Still with me?
Don't worry - it's only difficult the first time!
Rô