Android : Trying To Make Nice Layouts For Landscape Mode?

My app has a tabhost with four tabs, and now I'm trying to make nice layouts for landscape mode. In order to make use of additional horizontal space I want to put TabWidget at the right side of the screen, and of cource all tabs must be one under another (like in a column).
But when switching to landscape mode all tabs get aligned in a row, it looks quite ugly. How to fix that?
Screenshot is here: http://imgur.com/gPS1R.png

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout

android:layout_width="fill_parent"
android:layout_height="fill_parent">

<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_weight="1">

<include layout="@layout/filter_wizard"/>
<include layout="@layout/filter_wizard"/>
<include layout="@layout/filter_wizard"/>
<include layout="@layout/filter_wizard"/>

</FrameLayout>

<TabWidget
android:background="#75ffffff"
android:id="@android:id/tabs"
android:layout_width="wrap_content" android:orientation="vertical"
</LinearLayout>
</TabHost>