Hi i've been browsing through nokia 770 information and am interested in purchasing it. But i have a few questions. Can you use the built in microphone to talk into gtalk? Is it easy to install applications such as gaim? Also how would i use my phones blue tooth for internet? Thanks for any help in anwsering any of these questions.

Yes. However, the 770 does not support bluetooth headset microphones to my knowledge, so you have to use the built in microphone. On the upside, the built-in mic is similar quality to Nokia's cell phones...

If there's an existing nokia770 binary, it's a pretty simple click, download, and click. Although there's no version of Gaim for the 770, there is a version of Pidgin available, which supports AIM, yahoo!, and a good number of other protocols.

It's a matter of simple bluetooth pairing for any phone that is compatible. An example is given here