Help with RSS please

Hi
Can someone lend a hand Im a newbie and I apologise if this is the wrong area to post or not a subject you deal with.

I thought Id set RSS Email subscripton up with Feedburner but feed wont validate.
I get these errors below but have no idea what to do !I put the code into my home page

the code is
<form style="border:1px solid #ccc;padding:3px;text-align:center;" action="http://feedburner.google.com/fb/a/mailverify" method="post" target="popupwindow" onsubmit="window.open('http://feedburner.google.com/fb/a/mailverify?uri=yabbayabba', 'popupwindow', 'scrollbars=yes,width=550,height=520');return true"><p>Enter your email address:</p><p><input type="text" style="width:140px" name="email"/></p><input type="hidden" value="yabbayabba" name="uri"/><input type="hidden" name="loc" value="en_US"/><input type="submit" value="Subscribe" /><p>Delivered by <a href="http://feedburner.google.com" target="_blank">FeedBurner</a></p></form>


Sorry
This feed does not validate.

* line 14, column 145: Undefined channel element: feedburner:info [help]

... tp://feeds.feedburner.com/yabbayabba" /><feedburner:info xmlns:feedburne ...
^

In addition, interoperability with the widest range of feed readers could be improved by implementing the following recommendation.

* line 26, column 0: content:encoded should not contain onclick attribute (46 occurrences) [help]

my blog is at www.yabbayabba.net

thanks
Richard