It's funny you post now as we've been having several discussions on the difficulty of quickly obtaining quality adoptable rats, especially ones that are hand raised and well socialized.
Your first bet is to look around for a local breeder, if one can be found (my closest one is a two hour drive away, and I drive to her to pick up my kids). A quality breeder will have a six month to year long wait for their babies, sometimes longer if you are looking for a specific color.
You can always find the colors you want at a pet store, but they are going to almost without exception be mill bred, which means they will be unsocialized and possibly even traumatized and hard to handle. You will also run the risk of your rats being improperly sexed by inexperienced or uncaring employees and accidentally coming home with a pregnant female. Yay, 20 for the price of one! (eep)
You can also look for rescue organizations in your area, or even if they aren't in your area, you could apply through some of the rat forums to see if you can set up a rat train where volunteers take turns ferrying your rats to you.
Here's an example of a large rat rescue who is currently working to provide transportation for a very large number of rats that were surrendered to her this year: http://rattitude.com/2010/06/1286/
There is also another rescue operation going on in California involving 1000 rats seized from a hoarder situation. They were actually featured on one of those Hoarder shows. That one is still in the very early stages, but it might be possible to get them to ferry some rats to you as they get more organized in the next few weeks.
Here's a big rescue closer to you, in Maine: http://www.mainelyratrescue.org/rattieblog2/
You can also look at petfinder periodically: http://www.petfinder.com/index.html
Some people have had luck on craiglist, but be /very/ cautious there. Most of them are either feeder breeders or will flat out lie to you or blackmail you to dump their unwanted pets on you, as in "I know I said I had a well socialized Russian blue boy, but really have a beige hooded pregnant female who bites but since you're already here, are you going to take her or shall I just go ahead and flush her down the toilet?" Yeesh.
Yeah, if you can find a reputable rescue or a breeder, you'll be much happier with your babies even if it means you have to drive out of your way or have a long wait.
Edit (Missed your last post, oops): That might work out well for you, especially if you aren't picky with the color or age.