How to get this all on one horizontal line?

How can I get this to appear on one horizontal line?  and how to make the font for "Enter GUID here" smaller?

<form target="paypal" action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_s-xclick">
<input type="hidden" name="hosted_button_id" value="VHS7P2232ZNYG">
<table>
<tr>
<td><input type="hidden" name="on0" value="GUID">Enter GUID here</td>
<td><input type="text" name="os0" maxlength="100"></td>
<td><input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_cart_SM.gif" border="0" name="submit"</td>
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1"></form>
</tr>
</table>

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