You can upgrade from Windows Vista to Windows 7, but not from XP to 7.
Some folks who apparently have a pile of operating systems discs have proposed that one could upgrade from XP to Vista, then from Vista to Windows 7, but I think that's insane.
By Andy Rathbone Upgrading from Windows XP to Windows 7 can be a chore.
Windows 7 will not automatically upgrade from XP, which means that you have to uninstall Windows XP before you can install Windows 7. Moving to Windows 7 from Windows XP is a one-way street — you can’t return to your old version of Windows.
Sure, you could keep using it — it won’t just stop working one day.
Updating the graphics driver may resolve display issues in Adobe applications.This document describes how to install an updated version of the graphics driver on a computer that runs Windows XP.The graphics driver is system software that controls a computer's graphics card (sometimes called a video card or GPU).If you’re still using Windows XP, you should be making plans to upgrade to something that will be supported.We’ve already explained why it’s time to let go of Windows XP and what will happen when Microsoft finally stops supporting it on April 8, 2014. It doesn’t support modern hardware properly and it isn’t as secure as modern versions of Windows because it doesn’t have User Account Control and other modern security features.
Running Windows Update ensures that your PC has the latest security patches and changes to XP, and it gives you the opportunity to install optional drivers and software.