Not really any options. WDW is very big and the "non Disney" hotels are pretty far away. You might need to look at some maps to get the scale we are talking about. Non-Disney can be a few miles from anything Disney owned and sidewalks for the most part are non existent!
Your options are Swan/Dolphin in the Epcot area which are serviced by the Disney transporation.
Hotels in DTD (Hilton, Regal Sun, Buena Vista Palace, Best Western and Doubletree) are within walking distance of DTD (Some closer then others) BUT the DTD buses do not go to a park so you have to go to another hotel and walk or bus to a park. Plus buses start running FROM DTD to the hotels an hour or so after DTD opens (9:30 to 10 AM in other words) DTD hotels do have decent tranport to the parks.