Just to add to what's been said:
The first USAF C-40B (BBJ) was 01-0015, not 02-0201 in the photo linked to above.
The USN's C-40A Clipper is a 737-700 Convertible (Quick Change spec.). New maindeck combi aircraft can no longer be certified for airline op's in the USA, so commercial use of this sub-type is doubtful.
For reference, see the previous thread on USAF BBJs (May this year):