upgrade from cuda 2.2 to 2.3

Accelerated Computing CUDA CUDA Programming and Performance
1

What would i have to do to upgrade to 2.3?

what do i need to install?
just the toolkit or do i also need the new driver?

thanks

2

Whenever you upgrade a toolkit, you have to install a new driver as well. You do not necessarily need to upgrade your toolkit when you install a new driver, however.

3

but if i want to go to cuda 2.3 I need to upgrade the driver and the toolkit?