Step 1:
Approach in a non-threatening way in a non-threatening environment.
Step 2:
Baring your teeth is generally considered pleasant to human females.
Step 3:
Initiate casual, yet non-boring conversation. Humour is usually a good thing.
Step 4: Exchange names. You may swap steps 3 and 4 if you feel like shaking things up a bit.
ALL DONE!
On a more serious note, don't make it a bigger issue than it is.
If you encounter someone you find interesting/attractive or notice someone knows about something that interests you as well, strike up a conversation.
Just remember, real life isn't a hollywood movie. Love at first sight rarely happens at all and even if it does its usually only to one of the 2 people involved.
If you want to meet and get involved with women you need to learn to communicate with people.
A good place to start would probably to stop identifying yourself as "I am a socially repressed gamer".
Also, another important thing is that the more people you know (and who doesn't consider you a creepy stalker or desperate leghumper), the better the chances of meeting someone who'll find you attractive/interesting.
A few short tips:
-Be attractive. If you're not physically attractive dressing sharp and working out will help. Also remember that beauty is in the eye of the beholder, even Quasimodo had a hot gypsy chick love him after all
-Be interesting. Humour and knowledge, without being a smartass or one of those people who never can be serious, is usually very good tools for meeting and communicating with males or female.
Being mysterious or having an interesting/dangerous/exotic past is usually also a good bet, although hard to control yourself.
-Be confident. This one is usually a hard nut for people who reduce themselves to "socially repressed gamer", but you need to build some confidence.
-Be worth it. Don't be an asshole, don't be in it just for the sex. Even if you do intend to be a player, be a gentleman about it (don't kiss and tell, don't lie to get what you want, etc).
Also, the Facebook music advice is WEIRD