showing next 3 item in xml

[santral]

hi,
I want to show 3 items from xml file...
and there will be a button to go next 3 items..

<item>
<question>A question.</question>
</item>
<item>
<question>A question.</question>
</item>
.........etc
so how can I show 3 items in one page. and show another 3 items with button....