Need to download windows vista to install my hp psc 1410 all-in-one printer-scanner-copier to my new computer.

If you mean you need the Vista version of the printer drivers for your printer then click this link http://h10025.www1.hp.com/ewfrf/wc/softwareList?os=2093&lc=en&dlc=en&cc=nz&product=441115&lang=en# if you mean you want to change your operating system to Windows Vista then you need to purchase Vista from a store I expect the first option is what you are after as you dont need to change to Vista to use your printer

Why??? If your computer is New it should have VISTA on it, or Windows XP, which is compatible with all printer scanner types. All you need to do is use the installation disk you got from the all- in -one-printer-scanner-copier and insert it into the disk drive and let it load up and follow instructions. if you do NOT have the disk--go to the website of the maker of the all-in-one and download the thing from there.