You can use the List-Style-Type property in CSS to change how an ordered list is displayed. Here’s how to do it:
Go to Edit, Stylesheet
Click New, then type in the selector as .romanlist
Click the Advanced button
In the Property column type in list-style-type
In the Value column type in the appropriate type, for example lower-alpha
Save all that by click on the OK buttons
Select your list, and in the breadcrumbs at the top of the workspace click on the OL selector.
In the Class on the right, type in the selector without the dot: romanlist
And that should be it!
Now for the second part, a date in spanish, here’s all the necessary parts to make this work:
In your record, the field must be a Date Format (this is set in the datamapper)
In the Text Script that places the date on your page, the Format column should be something like “medium date” or “long date” depending on your preference.
In the Edit -> Locale window, you can select Explicit Locale and then change the locale to es or any variation of ISO locales.