Hi Robert,
For a single column display open up the productlist.ascx and goto line 66 and adjust the column widths to your desire
<colgroup>
<col width="10%" /><%--Thumbnail Image--%>
<col width="30%" /><%--Product Name--%>
<col width="3%" /><%--Spacer--%>
<col width="20%" /><%--Price--%>
<col width="32%" /><%--Add to Cart button - single column layout--%>
</colgroup>
For a multi-column display open up the productlist.ascx and goto line 50 and adjust the following to get the look you want:
<asp:DataList ID="dtProductslist" runat="server" RepeatColumns="1" RepeatDirection="Horizontal" EnableViewState="False" Width="100%"
This can also be adjusted in pixels by using "px" instead of "%"
Thanks