Link to the SMS accelerator. It's installed on my phone and it's mint! Loads faster.
http://www.europe.nokia.com/A4149142
This can be loaded onto the phone by bluetooth, USB cable or Infrared.
To update your firmware, use the USB lead you got with the phone and go to the follwing address.
http://www.europe.nokia.com/A4176089?N80
Follow the on screen instructions but before you update your phone, I suggest you shut all Nokia related software and plug your phone into the PC. Wait for it to load the drivers (comes up with new device found and all that shit) when it says your device is installed and ready to use, then open the updater and follow the on screen instructions.