For textual fields, sometimes it's nice to use HTML to help spice up the registration page, especially when complex instructions are required for particular fields.
2 things:
1) The output of text of a textual field on the registration form always has slashes before apostrophes and quotes. I fixed this in my own version, but would be nice to have the fix in the next release. Edit lines 1642 and 2746 of class.dtregister.php to be:
return stripslashes($this->textual);
2) To make the editing of HTML easier, in the custom field properties, for textual fields make the "text" box use the WYSIWYG editor just like all the other similar places throughout DT Register do.
Thanks!