Okay that worked, although I have more shipping options and it looks like this:
$this->intl_types = array('Global Express' => 'Global Express Guaranteed',
'Global Express Non-Doc Rect' => 'Global Express Guaranteed Non-Document Rectangular',
'Global Express Non-Doc Non-Rect' => 'Global Express Guaranteed Non-Document Non-Rectangular',
'Global Express Envelopes' => 'USPS GXG Envelopes',
'Express Mail Int' => 'Express Mail International (EMS)',
'Express Mail Int Flat Rate Env' => 'Express Mail International (EMS) Flat-Rate Envelope',
'Priority Mail International' => 'Priority Mail International',
'Priority Mail Int Flat Rate Env' => 'Priority Mail International Flat-Rate Envelope',
'Priority Mail Int Flat Rate Box' => 'Priority Mail International Flat-Rate Box',
'Priority Mail Int Flat Rate Lrg Box' => 'Priority Mail International Large Flat Rate Box',
'First Class Mail Int Lrg Env' => 'First Class Mail International Large Envelope',
'First Class Mail Int Package' => 'First Class Mail International Package',
'First Class Mail Int Letters' => 'First Class Mail International Letters',
'First Class Mail Int Flats' => 'First Class Mail International Flats',
'First Class Mail Int Parcels' => 'First Class Mail International Parcels');