Is there something that Vista can do that XP can't?
Are you ready to relearn how to use Windows?
Vista has changed so many things (to my tastes, not in a good way), it's not
enjoyable for me to use.
While it is possible to install Vista on your laptop, if it came with XP, it
may not be a good idea.
Unless you have a dual core processor and minimum 2GB RAM, I wouldn't even
think of it.
The majority of laptops I see have Vista Home Premium. That may or may not
have the features you need.
If you are using it for connection to a corporate domain, you will need
Business or Ultimate.