You could do this with Custom XSLT formatting. If you just want file name with hits then try this transform:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:rslt="http://www.mythicsoft.com/FileLocator_16Aug2005"
version="1.0">
<xsl:output method="text" indent="yes"/>
<xsl:key name="hits-value" match="rslt:hit" use="concat(../../../rslt:path, ../../../rslt:name, substring(../rslt:text, @rslt:exprstart + 1, @rslt:exprlength))" />
<xsl:template match="/">
<xsl:apply-templates select="//rslt:file"/>
<xsl:text>	</xsl:text> <!-- Tab separator -->
</xsl:template>
<xsl:template match="rslt:file">
<xsl:value-of select="rslt:path"/>
<xsl:text>	</xsl:text> <!-- Tab separator -->
<xsl:value-of select="rslt:name"/>
<xsl:text>	</xsl:text> <!-- Tab separator -->
<xsl:value-of select="rslt:size"/>
<xsl:text>	</xsl:text> <!-- Tab separator -->
<xsl:value-of select="rslt:modified"/>
<xsl:text>	</xsl:text> <!-- Tab separator -->
<xsl:value-of select="rslt:contents/@rslt:totalhitcount"/>
<xsl:apply-templates select="rslt:contents/rslt:line/rslt:hit"/>
<xsl:text> </xsl:text> <!-- CR LF end of line -->
</xsl:template>
<xsl:template match="rslt:hit">
<xsl:if test="generate-id() = generate-id(key('hits-value', concat(../../../rslt:path, ../../../rslt:name, substring(../rslt:text, @rslt:exprstart + 1, @rslt:exprlength)) ))">
<xsl:text>	</xsl:text> <!-- Tab separator -->
<xsl:value-of select="substring(../rslt:text, @rslt:exprstart + 1, @rslt:exprlength)"/>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
Step-by-step:
- Save the above transform to a file, e.g.
filename_with_hits.xsl
- Click the File->Export Results... menu option
- Specify the
filename_with_hits.xsl
file in the Custom (XSLT) field
- Choose File name AND Contents for exporting
- Click Export

Your export should look something like this:
E:\folder\ FileOne.h 22.00 KB 17/09/2012 21:30:56 12 Keyword1 Keyword2
E:\folder\ FileTwo.cpp 22.00 KB 22/08/2012 17:30:17 4 Keyword1 Keyword2
E:\folder\ FileThree.h 2.00 KB 17/09/2012 20:50:19 1 Keyword1
E:\folder\ FileFour.h 2.00 KB 01/10/2012 18:15:34 1 Keyword2
E:\folder\ FileFive.H 28.00 KB 17/09/2012 20:43:00 1 KeyWord2