-Make your 4 drones mine (Click each one individually, it does make a difference.)
-Build a drone with starting 50 minerals.
-When he is done, make him mine.
-When you have 128 minerals, send a drone out to get ready to build a spawning pool. (By the time the drone gets to the desired location, you will have 150.)
-Make 2 drones while the pool is being created making your food 6/9.
-Make 3/6 zerglings when pool is done (Buy 3, get 6). When they are done make them attack. This usually cripples or kills and opponent (Go for a supply depot to make marine flow stop or a pylon to "Unpower" a gateway/"Warping In" cannons.)
-Larva should appear about when your lings reach you opponents base. Turn that larve into a overlord.
-Make two drones when the overlord is done.
-When the drones are finished, make another one and turn those two into creep colonies (You will have to do this while your zerglings are in your opponents base.).
-Keep making more drones and turn creeps into sunkens.
-Keep making drones-Although you are spending money on drones your money should keep inching to 300.
-When you have 300 make a hatchery.
-Do this untill you have 4 hatcheries.
-Make sure you have 18 drones and about 49 or 57 overlord control.
-Start pumping out zerglings, your 4th hatchery should finish soon.
-Wait untill you have a decent sized army, 6 zerglings at a time don't do that well.
-Attack the person you earlier crippled and ask your partner for support, if you have one.
-Manage to make 2 drones while you are swarming with zerglings. Also, if your money is piling up, make 2 more hatcheries.
-Turn those into extractors (I'm assuming that map has 2 extractors.).
-If the zerglings keep crippling send more, if they have fire bats, EXT. Make drones at all 4 hatcheries and make 4 drones mine gas at each extractor.
-Build TWO hydra dens, this will give you fast upgrades, plus if you build them far apart they might try and cripple you by going for just one.
-Make a lair.
-Make lots more drones.
-Build 2 more hatcheries (Total of 6) if you didn't before.
-Start both upgrades.
-Pump out hydras.
-Watch those bunkers filled with fire bats burn down quickly.
-Hope your teamate doesn't suck (Know one likes crappy teamates.) and you can kill the other person.

********************************NOTES********************************

-If you notice they are attacking early after you rush, make sure you make more sunkens and maybe even a few lings to slow them down while they make their way to the sunkens.

-If you notice the opponent you chose to attack is receiving his teamates entire army for defense, send your guys in on someone else. If they sent their entire arey to someone else, like i just said, then you should be able to (1.) Take out any unmobile defense. (2.) Kill base (Exception terran --> Lift-off) (3.) Kill most probes or SCVs. Don't go for drones, zerg can rebuild them quickly and killing key buildings like hydra dens, spawning pools, or spires provide more of a crippling effect.

-If you are in a No-Rush game don't use this, it has a rush, and NO ONE likes people that break the rules (In exception to your team that is now playing a 3v1 cause you killed two people with a six ling rush).

-Don't hack.

-If you find out someone else on your team is hacking, call an *ALL* vs *HIM* and posibly already have a few lings in his base. :-)

-Use this as guide-lines; if you try to do this in steps like a robot you won't do good. You have to observe what your opponent is doing to get the specifics on what to do.

-Enjoy! This works for me!

CreepColony's Opinion: Defilers would help a lot.