NL25: QQ, 2 opponents, short-stack 4-bets.
 

All players are totaly unknown because I havent played at PokerStars before and these are my first hands.

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($27.20)
Button ($45.85)
SB ($8.85)
BB ($12.75)
UTG ($13.25)
UTG+1 ($20.60)
MP1 ($4.75)
MP2 ($15.95)
MP3 ($5.05)

Preflop: Hero is CO with Q[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
UTG calls $0.25, <font color="#666666">3 folds</font>, <font color="#CC3333">MP3 raises to $0.75</font>, <font color="#CC3333">Hero raises to $2.75</font>, <font color="#666666">3 folds</font>, UTG calls $2.50, <font color="#CC3333">MP3 raises to $4.75</font>, Hero ?

Re: NL25: QQ, 2 opponents, short-stack 4-bets.
 

I'd probably reraise here to isolate the shortstack, though I'm uncertain about the bet-sizing. A shove might be good here considering that UTG is most likely set-mining given his action, and if he's playing AK weirdly, you're still even with some nice dead money in the pot.

Re: NL25: QQ, 2 opponents, short-stack 4-bets.
 

shove and isolate the short stack, dont let UTG see a flop, which he probably will for only £2.25

Re: NL25: QQ, 2 opponents, short-stack 4-bets.
 

UTG only has about 10.50 left. Raise enough to get all of that in.

Re: NL25: QQ, 2 opponents, short-stack 4-bets.
 

[ QUOTE ]
UTG only has about 10.50 left. Raise enough to get all of that in.

[/ QUOTE ]

I agree. Raise enough to put UTG all-in. If he calls, he'll be behind you and add quite a bit of overlay to the pot. If he folds, that's fine for you too since you get heads up with the shortstack with no further betting on later rounds.