Well.. you make a good impression on the mother first..then she gives you her daughters phone number.
I've been that guy. It's really weird if you're not interested in the girl, and the mother keeps trying to set you guys up. But, if I was interested in this girl, it would be great. But, alas....I like girls that actually say more than two words in an hour. But Mahogony makes a point. If you have an in with the family before hand, half the battle's already won.
I'm in a similar dilema .hack0, since I'm not able to attend church regularly, and I don't want to go bar hopping. Despite all the stabbings etc. that happen in some of the bars in my town, the women that I would assume would be there, aren't exactly the God fearing, pure and chaste kind. I'm not in school right now either, so really my only social outlet is work. And interpositional relationships are strictly forbiden, and I'm a manager, so...yeah. I'm not the type that would just go up to a girl in the library and hit on her. Even though it's not really creepy, it seems that way to me. Maybe try to advance your social life in general, and see if there are any possible females. It might be easier if they become your friend first.