My maintenance shedule for my 2001 outback says do nothing until 105,000 for the camshaft belt or the drive built. Is this the same as a timing belt, just external. I know a mechanic the tells me to not replace the timing belt or chain because it is internal and a 8 hr job. According to my book I don't even have a timing belt or chain. At least its not listed as needing schelduled maintenance I also think the differnt terms my be confusing me.

You do have a timing belt that should be replaced after 100,000 miles. It is internal and does involve engine disassembly. But you can choose not to do this and the worst that will happen is that the engine won't work one day when the belt breaks. There will be no engine damage as with other types of engines when the belt breaks. You also have visible external belts to operate the water pump, AC, and alternator. You can inspect them, and  if they have cracks, they should be replaced or the listed components will not work when the belt breaks.

You do have a timing belt fitted.And should be changed at manufactures recomendations.