Adobe CE is a Character Set
Fonts with an Adobe CE (Central European) character set also include the characters necessary to support the following central European languages: Croatian, Czech, Estonian, Hungarian, Latvian, Lithuanian, Polish, Romanian, Serbian (Latin), Slovak, Slovenian and Turkish.
It is explained the this link: http://www.adobe.com/type/browser/info/charsets.html, but the link doesn't provide information about how to get the set.
A character set isn't something you can buy, or download. It's an abstract thing - a list of characters. Where a character set gets real is in a font.
That is, some fonts include the CE character set. You can, before buying a font, check whether it includes the CE character set (which I think may also be called Latin2, but don't hold me to that). Many fonts these days include CE as standard, but others don't.
Now, this may not be the advice you want, so let us know the specific problem you have - I imagine something using the characters in the CE character set isn't working for you - in detail and we may be able to help.
Patricia, my guess is that youu'd be better off posting your question in the Typography forum,