Or other?

Whats my move

POKERSTARS GAME #7154438678: HOLD'EM NO LIMIT ($0.05/$0.10) - 2006/11/24 - 12:00:02 (ET)
Table 'Cordelia II' 9-max Seat #5 is the button
Seat 1: aBuSingPoKeR ($7.90 in chips)
Seat 2: manouch ($5.50 in chips)
Seat 3: mr.vicc ($1.95 in chips)
Seat 4: Hero ($15.80 in chips)
Seat 5: Mr_Ee_Man ($9.15 in chips)
Seat 6: dom82 ($13.85 in chips)
Seat 7: DERUY ($9.15 in chips)
Seat 8: Ichiro614 ($1.55 in chips)
trets411 is connected
dom82: posts small blind $0.05
trets411 has returned
DERUY: posts big blind $0.10
*** HOLE CARDS ***
Dealt to Hero [Ah 7h]
Ichiro614: folds
aBuSingPoKeR: folds
manouch: folds
mr.vicc: folds
Hero: raises $0.30 to $0.40
Mr_Ee_Man: raises $0.60 to $1
dom82: calls $0.95
DERUY: calls $0.90
Hero: calls $0.60
*** FLOP *** [2c 4h Kh]
dom82: bets $0.50
DERUY: folds
Hero: calls $0.50
Mr_Ee_Man: raises $3.50 to $4
Hero?