I know the whole process of rooting and whatnot, I just am unsure as to how to go about it with such an old phone. A vast amount of apps on the Market run on 2.2+, and it's quite the annoyance to be so far behind. I'm not particularly worried about the potential of bricking it, I get an upgrade in 3 months.

If updating the phone to Android 2.2 is not possible, is there anyway I can acquire SnapChat without updating? It's kind of a big deal to someone who isn't me...
My only other option is to go and buy an iPod Touch.

Any help is appreciated. Thanks!