from Products.PythonScripts.standard import url_quote

parameter_to_pass = url_quote("Jane Johnson")
destination = 'MyTargetDTMLMethod'

context.REQUEST.RESPONSE.redirect(destination + "?Name=" + parameter_to_pass)

# In the DTML Method "MyTargetDTMLMethod" you can display the
# Passed-in parameter like so:
<dtml-var standard_html_header>
The Last Name is: <dtml-var expr="REQUEST.form['Name']" newline_to_br>
<dtml-var standard_html_footer>