Can see it here : http://i185.photobucket.com/albums/x307/GaryNull/cellHighlight.gif
The whole highlighted column is a hyperlink and is clickable, not just the text part.
In the file : \Administration\Modules\Products.ascx,
Add the <div> and <a> tags here (or just copy this whole thing) :
<asp:GridView ID="gvProducts ..................
<asp:TemplateField HeaderText="<% $NopResources:Admin.Products.Name %>" ItemStyle-Width="35%">
<ItemTemplate>
<div class="navbar">
<a href="ProductDetails.aspx?ProductId=<%#Eval("ProductId")%>">
<asp:Image runat="server" ID="imgProduct" Visible="false" style="margin-right:10px;" />
<%#Server.HtmlEncode(Eval("Name").ToString())%>
</a></div>
</ItemTemplate></asp:TemplateField>
Then add this to : \App_Themes\administration\styles.css
div.navbar {border-collapse: collapse; width:100%;}
div.navbar a{display: block; width: 100%; padding: 5px; text-decoration:none; font-size:14px;}
div.navbar a:link, a:visited {color: #333;}
div.navbar a:hover, a:active {color: #000; background-color: #D3D3D3; text-decoration:none;}
Can do it for the Category page too : \Administration\Modules\Categories.ascx
<asp:GridView ID="gvCategories" ..........................
<Columns>
<asp:TemplateField HeaderText="<% $NopResources:Admin.Categories.Name %>" ItemStyle-Width="55%">
<ItemTemplate>
<div class="navbar">
<a href="CategoryDetails.aspx?CategoryId=<%#Eval("CategoryId")%>">
<%# Server.HtmlEncode(GetCategoryFullName((Category)Container.DataItem))%>
<asp:HiddenField ID="hfCategoryId" runat="server" Value='<%# Eval("CategoryId") %>' />
</a></div>
</ItemTemplate></asp:TemplateField>
