[Christopher15]

My phone is lost and I want to get into it from my computer. How do I do this?

[B. Diddy]

Welcome to Android Central! The only thing you can do is try to locate it, and possibly send a remote wipe command, using Android Device Manager on your computer browser (google.com/android/devicemanager). The phone has to be on and connected to the web. You won't be able to remotely access the data on the phone, though. This is why it's important to keep your phone backed up or synced on a regular basis, and why you should preferentially use apps that do sync to the cloud (like all of the Google apps).