HMM think that’s not entirely true there is loads of software for it a few months ago there wasn’t true but nearly all every day software will run on vista if you have doubts look on the website for the different pieces of software.
Every device I use has a driver for vista and although some don’t the majority are in the beta development stage or are already released and most xp drivers will work on vista.
It does have big system requirements but so does xp if you want it to run fast, as long as you have a fairly meaty computer (over 1g ddr2 ram, over a 2.6ghz processor and at least 100g hdd) or a new comp you will be fine.
The gui is a massive change but its a massive improvement on xp its takes a while to get used to but you release vista has everything in the right place for easy access.
To be honest if you have xp I would upgrade xp is one of the most buggy o/s ever released where as vista is much more reliable and has helpful error messages and excellent support.
But this is just my view on the matter but I think I know a fair deal but at the end of the day its up to you if you cant decide why don't you do a dual boot machine then you can have both!
The way to tell if all the software you currently run on your xp machine will work on vista is to use the vista compatibility program on the Microsoft website.
I upgraded from WinXP to Vista myself and the first time I did vista gave me A LOT of issues and I was able to get back to WinXP. I waited a week and decided to give it another go and 3 to 4 hours later Vista was installed.
I highly recommend you back up anything you don't want to loose and give it a go. I have been using Vista for 3 months and LOVE IT!
Sorry for bumping this but i've been using XP Home and Pro for ages now (you could say so 4 years+) and didn't want to migrate to Vista. Now i'm on Dual Boot with XP and Vista and love the Vista UI and interface. Its faster than XP in some cases and slower for games, since the drivers are not that compatible. They will improve slowly and u c nowadays games are only Vista compatible like Halo 2 and DX10 will definitely boost Vista sales. I luv Vista.