final table!

[meff66]

well, i finally got to a final table.
7th last night on PS's 10/1. i was pretty excited to say the least outlasting 1,353 others.

anyway, i would like opinions on one hand near the end. sadly, i WAS chip leader with 10 left (5ea on 2 tables), when i got this hand:

(sorry for not knowing how to use the converter thingy)

PokerStars Game #1547641104: Tournament #7060231, Hold'em No Limit -
Level XVII (6000/12000) - 2005/04/19 - 00:21:15 (ET)
Table '7060231 73' Seat #3 is the button
Seat 1: (423441 in chips)
Seat 3: (92496 in chips)
Seat 4: villian (212861 in chips)
Seat 5: hero (405542 in chips)
Seat 6: (136758 in chips)
villian: posts small blind 6000
hero: posts big blind 12000
*** HOLE CARDS ***
Dealt to hero [7s Ac]
seat6: folds
seat1: folds
seat3: folds
villian: raises 12000 to 24000
hero: raises 380942 to 404942 and is all-in
villian: calls 188261 and is all-in
*** FLOP *** [Ks 4d 9c]
*** TURN *** [Ks 4d 9c] [2h]
*** RIVER *** [Ks 4d 9c 2h] [Qs]
*** SHOW DOWN ***
villian: shows [9s Ad] (a pair of Nines)
hero: shows [7s Ac] (high card Ace)
villian collected 427522 from pot

correct play? we were on the bubble for PS's final (9) table. i just couldn't imagine him risking everything at that point with anything short of AA,KK,AK,etc. he consistantly made min raises with overcards, Ax, etc. seemed like a no-brainer. perhaps not?