Dear Rick, in HTML you use the squiggly backwards S "and" sign (the ampersand) --&-- followed by the instruction, for example, for an umlaut over the "o" you would go ampersandOuml and that is followed by a semi-colon. For an "e" with an acute accent you would do the same, ampersand followed by Eacute;, and so on. There are long lists of characters that show this way: you can find them on-line or in an HTML book (I don't have either to hand). The semi-colon is important.
yours, Peter T.