Hi Amr,
As Christian pointed out, it should be "Jobs" instead of "jobs" as it looks for the exact case sesitive word.
Secondly, when you write <xsl:for-each select="Jobs">, xslt is not able to position that particular column/field and that is why you should navigate the complete path as "/Rowsets/Rowset/Row" or "//Row"
Regards,
Anuj