in my e-mail form I don't like the size that the bottom text area is sized how can I change this

here is an example (http://www.geocities.com/tcr6787/Untitled.html)

<br>
<textarea name="Tell me about my site" wrap=physical rows=7 cols=46></textarea><br><br>

change the numbers in bold, the rows will change the height and the cols will change the width

I tried that but it didn't work

style="width:500px;height:500px;"

change numbers to suit.
(that last double quotes should be on the end instead of on the next line. weird forum renderings...)