if you've survived this long on onboard, a $100 card would be more than enough. But i doubt you have pci-e but probably have AGP. newegg.com is very cheap for everything
just get a supercard then you wont have to buy any games! but have a good selection, at least one game from every genre. i have Metroid Prime Hunters Kirby Kanvas Curse Snow Board Kids Mario Kart Lunar Dragon Song Castlevania Dragon Ball Z Advance Wars and some others
Japan is kinda.....well some traditions are dumb. the USA puts more into its military then anybody else, and when something big happens, like when the USA nuked Japan before Japan had a working bomb, all the scientists working on it killed themselves...not a good way to progress