I bought a theme for my bold and it worked fine. I bought another theme and downloaded it like the other, but can't find it with my themes. Can you have two purchased themes at once? If so, where could it be? Thanks!!
Right, if you can't find the theme, then you downloaded the wrong version.
You can have as many themes as you want installed though! (but you can only have one running at a time).
If you are using OS6:
Options > Display > Screen Display: and then scroll all the way down and all of your downloaded themes will be there.