Hi,
you van do this with java script in the onload event of the form.
Examples:
// change the font of a label
crmForm.all.<your_field>_c.style.fontFamily = 'Forte';
// change the font size
crmForm.all.<your_field>_c.style.fontSize = '16px';
// HTML to change the label
var field = crmForm.all.<your_field>_c;
field.innerHTML = "Auch <sup>hochgestellte</sup> Zeichen <strong>sind</strong> möglich";
Viele Grüße
Michael Sulz
axcentro GmbH
MVP für Microsoft Dynamics CRM