Upgrades infer that you upgrade the physical components of the computer,rather than any of the data inside it's storage devices.
clean install requires you to re-install programs
You upgrade your computer as often as you feel it necessary.
no,you'd have to install vista by itself on the computer,but,yes,Its a upgrade to xp
No, you shouldn't require any tools to install a memory upgrade for your computer.
Yes, it will upgrade the account, no matter what computer it is on, providing you use the same account.
sure
It is a tool that comes as part of the ActiveState Perl install. It allows you to install, remove and upgrade the Perl CPAN modules installed on your computer.
You want to back up your data and create a restore point.Then you can install it.If you have problems you have to deal with them.
As long as your computer meets the system requirements for 10.5 you can purchase and install Leopard.
Yes, you can. As far as you already have OS of older generation installed you can run the upgrade DVD.
You can upgrade your computers perfomance by purchasing a memory ram upgrade or you can look into getting a more recent operating system like Windows 7 or Windows Vista.
Because all of your Devices and Programs are already installed on your computer.