There's 2 quite decent versions - at least in terms of the 'feel' of the originals - that can be downloaded and played thru Excel:
Angry Birds Excel & Angry Birds Rio Excel - from www.excelgames.info
Both use mouse-based input (instead of touchscreen) and I would guess - I'm most definitely NOT a coder/programmer! - that you could pretty easily look at the code as they're Excel macros...?
Maybe this would give some of our resident coders more ideas?
Just a thought.