There are different ways to install Windows Vista? Yes, and deciding which installation method to complete is really important.
Below are links to tutorials describing the steps necessary to complete particular kinds of Windows Vista installations, as well as information to help you decide which one is best for you.
Note: These step-by-step tutorials apply equally to any version of Windows Vista like Windows Vista Premium, Business, Ultimate, etc.
A Windows Vista clean install is basically the wipe-it-clean-and-install-it-from-scratch method of installing Windows Vista.
In other words, a Windows Vista clean install removes all the information from the drive you currently have Windows Vista (or another operating system) installed on. Anything you have on that drive must be backed up and you'll need to reinstall any software you had.
Considering all the after-the-fact work with a Windows Vista clean install, it's probably the most difficult to complete. Of course it also leaves your computer in like-new condition and is a sure fire fix for just about any software related problem you might have had.
A new or completely empty hard drive that you want to install Windows Vista on is best served with what is called a "new install."
Important: The site I linked to here calls this type of Vista installation a "clean install" but it actually demonstrates a "new install" of Windows Vista. A clean install would include the deletion of a partition with an existing Windows installation, which this guide does not do.
Another, much less common way to install Windows 7, is called a parallel install. A Windows Vista parallel install involves installing a second, "parallel" installation of Windows Vista on your computer.
In other words, a parallel install results in two, completely separate instances of Windows Vista being installed on your computer. It's kind of like creating a dual booting scenario between Windows Vista and... another Windows Vista.
Most of the time, a Windows Vista parallel install is created on accident after making key mistakes during a clean install. You might actually want to parallel install Windows Vista as a solution to certain kinds of problems, but it's not common.
A Windows Vista Startup Repair isn't technically a way to install Windows Vista, but it resembles a "reinstallation" enough that it's worth a mention here.
In Windows XP, there was a process called a "repair install" which was essentially a way to overwrite all the important parts of Windows XP with files from the installation disc.
A Windows Vista Startup Repair is similar, but a bit smarter. Instead of blindly overwriting files, it checks for issues first and then repairs only what's needed.
Many a Windows Vista start-up issue can be fixed automatically with the Startup Repair tool, so please be sure to run this before trying something more destructive like a Windows Vista clean install.