> that I want to display NameAddress1, and also need to
> concat all following Nodes that end in a comma.

<xsl:template match="NameAddress1">
 <xsl:value-of select=".">
 <xsl:for-each sellect="following-sibling:*
        [contains(concat(.,'QWERTYUIOP'),',QWERTYUIOP')]">
  <xsl:value-of select=".">
 </xsl:for-each>
</xsl:template>

untested

David

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