don't forget that aspell is available for many languages from http://aspell.net
, most of the dictionaries can simply be "dropped" into place. (read UE help for instructions).
I've been unable to configure aspell shipped with Ultraedit to ignore sgml tags so you'll find aspell isn't particularly handy. I raised this comment with the folks at IDM and they suggested a more complete configuration of aspell from within UE32 may be availabe in the next release.
However, aspell itself is a very powerful spell checker and has many features that UE32 doesn't even nod a wink at, so take the plunge and run aspell from DOS.
I guess aspell will feature more importantly with the IDM crew because they've focused more heavily on HTML coding with the current beta release, and if they are going to realise their ambitions of a half decent HTML editor, aspell must work within UE32!