There are a few ways you could attempt this, but going from the house to a pole does look like your best option. Support wire is recommended if you are hanging larger bulbs over a large open space, or you can use a few poles to reduce the length of hanging wire. Posts can be cemented into the ground to ensure a sturdy hold. More advice is available for hanging patio lights here: http://www.yardenvy.com/diy/how-to-hang-patio-lights