java filtering and xs

<client>
 <fname>george</name>
 <lastname>qwerty</lastname>
 <address>1</address>
 <region>12</region>
 <email>hotmail</email>
 <phone>200897456</phone>
</client>

<client>
 <fname>george</name>
 <lastname>liberty</lastname>
 <address>1</address>
 <region>14</region>
 <email>hotmail</email>
 <phone>20084457456</phone>
</client>

<client>
 <fname>nick</name>
 <lastname>klipd</lastname>
 <address>1</address>
 <region>19</region>
 <email>hotmail</email>
 <phone>200855</phone>
</client>

<client>
 <fname>alex</name>
 <lastname>poly</lastname>
 <address>1</address>
 <region>11</region>
 <email>hotmail</email>
 <phone>20013131</phone>
</client>

<client>
 <fname>owen</name>
 <lastname>nitro</lastname>
 <address>7</address>
 <region>71</region>
 <email>yahoo</email>
 <phone>8003698</phone>
</client>

<client>
 <fname>what</name>
 <lastname>who</lastname>
 <address>7</address>
 <region>78</region>
 <email>yahoo</email>
 <phone>98</phone>
</client>

<client>
 <fname>owen</name>
 <lastname>bishop</lastname>
 <address>7</address>
 <region>76</region>
 <email>yahoo</email>
 <phone>800</phone>
</client>
etc....

So with my first xsl i wnat to create this sort of xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet type="text/xsl" href="8.xsl"?>
<wow>
<client>
 <fname>george</name>
 <lastname>qwerty</lastname>
 <address>1</address>
 <region>12</region>
 <email>hotmail</email>
 <phone>200897456</phone>
</client>

<client>
 <fname>george</name>
 <lastname>liberty</lastname>
 <address>1</address>
 <region>14</region>
 <email>hotmail</email>
 <phone>20084457456</phone>
</client>

<client>
 <fname>nick</name>
 <lastname>klipd</lastname>
 <address>1</address>
 <region>19</region>
 <email>hotmail</email>
 <phone>200855</phone>
</client>

<client>
 <fname>alex</name>
 <lastname>poly</lastname>
 <address>1</address>
 <region>11</region>
 <email>hotmail</email>
 <phone>20013131</phone>
</client>
</wow>

<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet type="text/xsl" href="8.xsl"?>
<wow>
<client>
 <fname>alex</name>
 <lastname>poly</lastname>
 <address>1</address>
 <region>11</region>
 <email>hotmail</email>
 <phone>20013131</phone>
</client>
</wow>
....

what i cant achieve is to cobine the two xsl files.import or include dont
seem to work. i use if to take only the clients from usa and then copy-of
select to create the new tree with them and then in the different xsl the
same idea to take the nyorkers.
The code is something like this:

<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"  version="1.0">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<xsl:apply-templates/>
</xsl:template>
<xsl:template match="clients">
<xsl:if test="address='1'">
<xsl:element name="client">
    <xsl:element name="fname"><xsl:copy-of select="./fname"/></xsl:element>
    <xsl:element name="lastname"><xsl:copy-of
select="./lastname"/></xsl:element>
    <xsl:element name="address"><xsl:copy-of
select="./address"/></xsl:element>
    <xsl:element name="region"><xsl:copy-of
select="./region"/></xsl:element>
    <xsl:element name="email"><xsl:copy-of select="./email"/></xsl:element>
    <xsl:element name="phone"><xsl:copy-of select="./phone"/></xsl:element>
</xsl:element>
</xsl:if>
</xsl:template>
</xsl:stylesheet>