1:You know the speed dial settings and 1 is voicemail? How do I remove voice mail so I can place a contact on there.
You can change the number but I believe that slot will always be called "voicemail."
2:When I open task manager and I try to free some ram with level 2 clear memory and exit the task manager, my phones vibrate once, then black screen, vibrate a second and goes back to the task manager and gives me "The application twLauncher(process.com.sec.android.app.twlauncher) has stopped unexpectedly. Please try again. How can I fix this?
Yeah, the stock task manager isn't so "smart" at differentiating apps. If you want more flexibility, you can try advanced task manager, where you can add apps like launchers to the "safe" list so it doesn't get stopped.
3:What does the "gingerbread" upgrade do?http://developer.android.com/sdk/android-2.3-highlights.html