unless you work in a supermaket, getting a new job won't do you much good, and even in a supermarket, there isn't much of a social 'scene'(i don't get why dpeople use 'scene..' mm..)
to be honest, i am in the same kind of situation you are. all of my old friends are still at college, whereas i have left and got a job. i don't talk to any of them anymore.. especially as i had a big blow out with my old best friend the other night.. i know i need to make friends, but i have no idea how to go about it. i'm not into clubbing (though why would you go on your own anyway?!) i'm not a drinker, so i don't go to pubs (again, i wouldn't go on my own) and i don't really think going up to complete strangers and saying 'hi there! i'm a loner, please be my friend' is going to do me or the person much good.
i didn't help, but i thought i would let you know that you are not alone.