SiteMapPath control and .skin files

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Hi. I was wondering if someone could tell me how to set SiteMapPath control
styles in a .skin file. I've tried this (see below) but it doesn't work:

<asp:SiteMapPath runat="server" PathSeparator=" | ">
<PathSeparatorStyle Font-Bold="true" Font-Names="Verdana" />
</asp:SiteMapPath>

I'd like to set many other properties as well so that I don't have to
configure the styles on each page but I can't find any examples online to
show how this is done.
Thanks!