Is it just like another period, or first score wins?

What happens if it's still a tie after overtime?

goes to second ot of 10 minutes
after that i think it is penalty kicks

Can you pick any 5 players to kick?

Give me an army of West Point graduates and I'll win a battle. Give me a handfull of Texas Aggies and I'll win a war - General George Patton

I believe any 5 may kick.

I think it's any 5 of the players on the field at the end of 2ot.

BANA Class of '89

http://www.ncaa.com/library/rules/2002/2002_soccer_rules.pdf

For postseason games, which include conference tournaments,
play-ins and NCAA tournament games, two sudden-victory overtime
periods of 10 minutes each shall be played. If the score still is
tied, the game shall be recorded as a draw and the tiebreaker procedure
of taking kicks from the penalty-kick line or spot, as set forth
below, shall be used to determine a winner:
(1) Only players who are listed on the official NCAA game roster form
shall be eligible to participate in the tiebreaker. Each team shall designate
either: (a) 10 different kickers, one of whom may be the goalkeeper,
or (b) 10 different kickers and a goalkeeper who will not participate as a designated kicker in the tiebreaker procedure. The kicking
order shall be at the discretion of the kicking team; however, once
taken, the order of the designated kickers must remain the same. If
any of the designated players, except for the goalkeeper, are ejected
during the tiebreaker, the game will continue with the remaining
designated players; and the opposing team, if necessary, shall have
the option to reduce or adjust its kicking order to avoid being penalized
or placed at a disadvantage if the No. 1 kicker from the offending
team ends up kicking against the No. 10 kicker from the nonoffending
team. In addition, if the designated player ejected is the goalkeeper,
his or her replacement may be from any of the eligible players
listed on the official NCAA game roster for that game; however,
the game will continue with the remaining designated players and
the opposing team must remove one of the designated kickers from
its kicking order.
(2) The visiting team shall call the coin toss, the winner of which elects
to kick first or last. Each team shall take an initial series of five kicks
alternately. The team scoring the greater number of goals shall be
designated the winner.
(3) If the score still is tied after each team has taken five kicks, kicks shall
continue alternately in the same order until a team has one more goal
in the same number of kicks.
(4) Each kick shall be taken by a different player until 10 kicks have been
taken by each team. If the number of kicks goes beyond 10, the initial
order of kicking shall be repeated.
(5) The nonparticipating goalkeeper shall stay on the field of play at one
corner of the penalty area. All designated players except the kicker
and the designated goalkeepers shall remain in the center circle.
(6) One official shall record the kicking order, and one shall administer
the taking of the kicks.
(7) Once the goalkeeper is designated, he or she shall not be replaced
unless injured or ejected; and his or her replacement may be from
any of the eligible players listed on the official NCAA game roster for
that game. Injuries leading to replacement of the designated goalkeeper
must be determined by the attending physician and/or a certified
trainer in concert with the governing sports authority (see page
8).
RULE 7-1/DURATION OF THE GAME