You must use cssrollup_xxx.xml to be able to use multiple not default css as files. With:
Code:
<rollup name="xxx-rollup.css">
<template>media.css</template>
<template>showthread.css</template>
</rollup>
--------------- Added 18 Apr 2010 at 19:03 ---------------
Or, easier, separate css:
HTML Code:
<link rel="stylesheet" type="text/css" href="{vb:raw vbcsspath}media.css" />
<link rel="stylesheet" type="text/css" href="{vb:raw vbcsspath}showthread.css" />