Well Bill now you are talking about my speciality! My primary business is Virtual Tours and I shoot 360 Panoramas basically everyday.
Here is what I use:
Bogen 3021BPro with Bogen 303QTVR Head
Canon EOS Rebel XT
Canon 10-22 f3.5 @14MM
Canon 550EX With Gary Fong Lightsphere Cloud
I shoot a series of 12 Stills at the designated stop points on the QTVR head then I process the raw files to usable .jpegs after running them through HDRI software (If need be) and stitch them together using Anything3D.com's 3D Photobuilder Pro software. The thing I like about A3D's program is that it adjusts automatically for exposere and contrast across all images to give a reasonable image at the end of the processing. Once I have expoerted the image I do final touch ups in photoshop. You can see many examples on my index Website or here is one:
Hope this helps!