no problem, this website is meant to ask questions
1) unlocking the phone is done by entering the last 4 digits of your phone number as the password
2)flashing the phone is resetting it i take it, so you have to go to settings and then security, put the last 4 digits of your phone number as the password and go down to the option to resetting the defaults.
3)bitpim is a very crappy program. i would purchase datapilot, and a susteen usb cable
4)answered in 3
5)dont know what you mean about changing up software nut sanyos is by far the best...