Yes Ray, EOS Utilities requires a computer. It is the capture software that comes on the Canon camera disk.
It's very basic but works great. Obviously there are better capture programs, but they cost money . . . except ImagesPlus which is one of the best (if not THE best) capture software but it is verryyy complicated. The author/owner of ImagesPlus has retired and made if freely available now instead of the old price of $279
Personally I find BackyardEOS far better and easier to use and only cost AU$50 for the Premium Edition (link)
Yeah, 450d is a great camera and plenty go cheap. Look HERE