One word of warning re: status with AAdvantage, you require a minimum of four AA flights in a year to (re)qualify for elite status, in addition to the other requirements of points/miles. However, this four AA flight rule doesn't apply to the Platinum Challenge.
FewMiles..
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FlyerTalkers' Resources on the Web:
http://fewmiles.tripod.com/
Unofficial Guide to AAdvantage:
http://fewmiles.tripod.com/AA/
Unofficial
oneworld Info Desk:
http://fewmiles.tripod.com/oneworld/