yes vista does have alot of missing drivers for older products, but thats only because they are trying to move us into the future! anything that doesn't work with vista is obsolete IMO. it sounds a bit final, but I'm discovering that its quite nice to keep it simple.
yes you can, ive done it quite a few times already with about 5 different programs. works flawlessly.
and since XP was not even released until late 2001, i'd be very interested to know what XP you were using in 99-2k.
i will repeat once again. YOU WILL NOT LIKE VISTA IMMEDIATELY. It is a memory hog, it does have alot of useless features, but it ALSO has a HUGE amount of hidden/integrated features that no one seems to focus on. If you spend a little while with the system, you can disable all those stupid features and still be left with the good ones. And I right now am running vista on 1gb FLAWLESSLY. At first it was awful, but I weeded through everything and got it to run extremely fast and efficiently. anything above home basic was meant to run on a minimum 2gb of memory, once again, moving into the future. we didn't reject upgrading our hard drive space did we? otherwise we would still be going, wow, you have to have a WHOLE GB hard drive?! Time is moving pretty fast, technology is moving about 10x. I still like XP alot for slower systems, its one of the best operating systems in the world, its so stable that its scary. but sure, you can wait, and get acquainted with vista later, only you can make the difference, but nearly ALL new programs and almost ALL new hardware is already compatible.