diff -u -r1.8 -r1.9
--- lcsim.xsd	4 Jun 2010 19:41:37 -0000	1.8
+++ lcsim.xsd	10 Jun 2010 18:35:02 -0000	1.9
@@ -40,7 +40,13 @@

                 <xs:element name="dryRun" type="xs:boolean" minOccurs="0" maxOccurs="1"/>
                 <xs:element name="logFile" type="xs:string" minOccurs="0" maxOccurs="1"/>
                 <xs:element name="cacheDirectory" type="xs:string" minOccurs="0" maxOccurs="1"/>

-                <xs:element name="skipEvents" type="xs:positiveInteger" minOccurs="0" maxOccurs="1"/>

+                <xs:element name="skipEvents" minOccurs="0" maxOccurs="1">
+                    <xs:simpleType>
+                        <xs:restriction base="xs:integer">
+                            <xs:minInclusive value="0" />
+                        </xs:restriction>
+                    </xs:simpleType>
+                </xs:element>

                 <xs:element name="numberOfEvents" type="xs:integer" minOccurs="0" maxOccurs="1"/>
                 <xs:element name="verbose" type="xs:boolean" minOccurs="0" maxOccurs="1"/>
                 <xs:element name="printDriverStatistics" type="xs:boolean" minOccurs="0" maxOccurs="1"/>