Houghy,
I am using DSLR focus.....even though I feal I can adequietly focus easily through the 20DA zoom focus setting...takes me a whole 30 seconds to do so...this is said to be not the case....DSLR Focus has some great functions.
I just purchased the DSHub from shoestring so I can control all my exposures from my PC at what ever length...instead of the 30sec max.
http://www.store.shoestringastronomy...roducts_ds.htm