GeorgeJ,I didn't see any mention of the 500 mile bonus either when I viewed my statements online. However, your miles will appear within a week.
From America West's Newsletter for FlightFund Members:
VISION SEPTEMBER 2000, Volume XII, Number III
Access FlightFund account information online, anytime - earn 500 bonus miles!
.........Through December 31, 2000, you'll earn a 500-mile bonus when you log on and check your account for the first time.......