partner_wireless/partner_wireless.xml

<openerp>
    <data>
        <record id="res_partner_extended_form_view" model="ir.ui.view">
            <field name="name">res.partner.extended.view.form</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
            <field name="arch" type="xml">
                <xpath expr="//notebook/page[@string='Internal Notes']" position="after">
                    <page string="Wireless">
						<group>
                            <field name="router_type" widget="url"/>
                            <field name="router_pass" widget="url"/>
                            <field name="wireless_ssid" widget="url"/>
                            <field name="wireless_key" widget="url"/>
						</group>
                    </page>
                </xpath>
            </field>
        </record>
    </data>
</openerp>