[Ubuntu-ZW] Ubuntu Issues

[Tafadzwa Kashora]

I installed Ubuntu 10.04 on my Toshiba L655-1HE which is supports 64
bit operating systems.
1) How do i check in Ubuntu the version i installed (32/64 bit).
2) How do i surf the internet using my Nokia 2730 as a modem, like i
do in Windows via Nokia PC suite.
3) I failed to surf the net by the Crown Plaza Zolspot, the wireless
icon in my system tray was grayed out.
4) How do i upgrade to Ubuntu 11.04, from 10.04?
5) What are the differences between Ubuntu Studio 11.04 and Ubuntu 11.04

Kind Regards

Tafadzwa