i really want to move my computer from vista completely over to any version of osx but i dont have the money to buy a new video card or processor or anything actually...so what i want help with is a detailed tutorial specific to my computer which ill post the specs at the end...all i care about is to be able to program ipod games or apps in general and run at a normal speed(not like 10 fps)...

specs:
AMD Athlon 64 x2 3800+ 2.0GHz each
ATI Diamond HD 2670 1GB DDR3
2.5 GB ram
250GB hardrive
realtek ac97 sound
i have an onboard ati radeon x200 if that would work as a last resort if my other doesnt work
if you need anything else just ask and ill post it