Absolutely yes.
Any type of Flash drive can be used in Windows Vista.
Yes. EVERY version of Windows needs anti-virus software, unless you will NEVER connect it to any other network. Or ever plug in a USB flash drive. Or load software from a CD.
Windows Vista can already run most XP applications, with no need for any additional software.
The best would have to be AVG. It is fully compatible with any version of Vista and its security is top notch. (This is not my opinion, im going on compatibility and effectiveness).
Generally, Linux is considered very secure from viruses. If you exercise general safety behavior, it is unlikely that any virus will enter your system. Even if a virus does get through into the Virtual Machine, it will only affect your Ubuntu install, not Windows.
You can, but you have to format the computer, and you need Windows Vista Approved CD. Also, Remember to backup the computer first to any drive, for example Portable Drives which has 500GBs.
I have had windows vista for over a year now haven't had any problem with them.
your computer might not be powerful enough to run vista. but to be honest i hate vista, get windows 7. Are there any applications running?
Windows 3.0 is not a version of Windows available for the Windows Vista GUI. Any version of Windows before Windows 2000 are also not available.
Many consumers are happy with Windows Vista, so yes.
Windows Seven, Windows Vista, Windows XP, and any other system opertators
Yes. Look for ones that have a "Compatible with Windows Vista" logo on them. As of 2009, almost all new products are compatible with Windows Vista.