select all nodes with same namespace

[ckoch]

If this is my xml, how do I select all nodes with the same prefix? ie. I want to do a doc.selectnodes and get all nodes that are in the ns0 namespace. selectnodes doesn't seem to do it or I can't figure out what the right xpath would be. Using vb.net, vs2005.

<w:wordDocument .....
 xmlns:ns0="http://tempuri.org/mystuff0.xsd"
 xmlns:ns1="http://tempuri.org/mystuff1.xsd"
... />

<ns0:Company></ns0:Company>
<ns1:State></ns1:State>
<ns1:Zip></ns1:Zip>