Ammo.
Good story, that was one heck of a "slap".
You don't need all that stuff, just a new vid card and a new JS. I run AHII just fine with a 1.4 celeron and FX-5200 Ultra, 384 RAM, Win98. I have to run it with the performance sliders in the middle, but it's perfectly playable.
I don't want to upgrade because I would either have to live with the pains of WIN XP and CH Analog setup ( which means a dual boot 98/XP or keep an old 98 machine around, for programming the throttle) or buying all new USB gear.
If you buy a new vid card and the F-16 Fighterstick analog, your total investment will be under $200 and should work for a couple more years.
An FX-5700 Ultra runs about $160. Or if you use the Coolbits program to unlock the Nvidia overclocking sliders, you could get a 5700 LE for $100. The 5700 LE overclocks great and performs like a stock 5700 Ultra.