background in comment box Options

[kalikine]

how do u put a picture as the background in the comment box code below?
& change the width/height of it?

<form method="post" action="http://comments.myspace.com/index.cfm?fuseaction=user.ConfirmComment"><input name="friendID" value="FRIENDIDHERE" type="hidden"> <textarea name="f_comments" class="Skem9box">Comment here</textarea><br /><input type="submit" value="Submit" class="Skem9sub"></form>

[hxixm]

heres my code!

CODE

<form method="post" action="http://comments.myspace.com/index.cfm?fuseaction=user.ConfirmComment"><input name="friendID" value="21975301" type="hidden"> <textarea name="f_comments" class="txtarea">Leave The Comments Here</textarea><br /><input type="submit" value="Submit" class="submitbttn"></form>

<style type="text/css">
textarea.txtarea {width:240px; height:200px;color:White;font-size:10pt;font-family:Arial;background-color:c60000;background-image:url(http://img148.imageshack.us/img148/2793/untitled16jk.gif); background-position:center; background-repeat:repeat;border-color:gray; border-style:inset; border-width:2px;}
input.submitbttn {width:200px; color:black;font-size:10pt;font-family:Arial;background-color:transparent;background-image:url(); background-position:center; background-repeat:repeat;border-color:gray; border-style:inset; border-width:2px;}
</style>