I would like to see a spellchecker in OS X for Romanian language
The place to tell Apple is here:
You may be able to add a Romanian spell checker if there is a dictionary for OpenOffice2 here:
Snow Leopard is compatible with the aff/dic open format dictionaries.
So, all you need to do is to get one dictionary, and place it inside ~/Library/Spelling (you may have to create the directory).
You have to logout & login, and then go to System Preferences > Language & Text > Text > Spelling > Romana ...and boom! you have system-wide romanian spell checking