Windows 7 is till now the best Windows operating system released till date, as per the user feedback, sales numbers and experience it has got some very positive comments. All those user who are still using XP and may want to upgrade to windows 7 are out of luck, as Microsoft does not allow to upgrade from XP to windows 7 as both are vastly different OS in terms of feature and their structure.
However there are 2 ways with which you can partially upgrade from XP to windows 7, but both of these method will require some input from your side. The first method is to install windows 7 in dual boot, after running the setup from Windows XP so it will get added to the boot loader. But it will result in wastage of disk space and it will require a different partition also to get installed this way.
Another method would be to backup all user data and settings with windows easy settings transfer and do a clean install after removing Windows XP completely, in this case you will be requiring to install the old software which you used to use again in the new Windows 7 OS.
We would suggest you to use Windows 7 upgrade advisor to check for issues and problems with devices and software that might occur after installing windows 7, so that you can come to know whether your system can run windows 7 smoothly or not.