pop off img and href tag from a RSS feed

Hi,

How can I pop off the <img src="...."> and <a href="..."> in the description of a RSS feed?

For instance,

HTML Code:

---

<title> xxx </title>
<link> xxx </link>
<description><img src="..."/><a href="...">Duis autem </a> vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis ...</description>

---

Many thanks,
Lau

SimpleXML