You could use CSS code within <P> tags — there’s a lot of font info in the Codex: Playing With Fonts or see the whole section on Blog Design and Layout.
Maybe something like:
<p style="font-size: 150%;">Larger Font In This Paragraph</p>
You’d have to be aware though of font issues between browsers — plenty of links on the Playing With Fonts page.
Add in font tags. 🙂
There’s a FAQ on teh subject over in wp.com land. Wrong site but the idea is the same.
Hope this helps,
-drmike
god.. must it be so complicated..
Adding in HTML is complicated? Ok….
