Digiscoping is far cry from what it was a few years ago. It has become very involved and with that expensive to set up.
You will require a good optical scope that will run you up to a few hundred dollars, plus the camera mount to the eye piece of the scope. You will require a good tripod that will run you a good number of dollars a $40 to $50 walmart special will not handle it.
Your camera will have to have a live view (that is the lcd panel on the rear of the camera).
You will have to spend a good amount of time taking practice shots to get the process down.
My advice get yourself a DSLR camera and a good long range lens such as a 400mm. When you add different focial lengths you will have a greater range of use.
My New Avatar is in memory of Nancy my darling wife of 10 years who passed away on Monday November the 16th 2009 after an illness
My photo gallery http://thekiwi.org/photography/index.php