Hi Mgp22,
One way is find the generated div and change its css by using Javascript. For example, IE: obj.style.styleFloat Firefox: obj.style.cssFloat.
Another easier way is move your Rating control into a div and add css to the newly added div. For example:
<div style="float:left">
<ajaxToolkit:Rating ID="Rating1" BehaviorID="RatingBehavior1" runat="server" CurrentRating="5"
MaxRating="10" StarCssClass="ratingStar" WaitingStarCssClass="savedRatingStar"
FilledStarCssClass="filledRatingStar" EmptyStarCssClass="emptyRatingStar" Tag="99"
OnChanged="Rating1_Changed" >
</ajaxToolkit:Rating></div><div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></div>
Best regards,
Jonathan