We did the same thing last year. the only problem we had was finding a sound driver for a 5-year old machine. Installation was a breeze. No problem running any apps after the upgrade.
Upgrading a computer system’s Operating System from Windows XP to Windows 7 with networking configuration involved could have several conflicts or incompatibilities. First, make sure that the hardware specifications of the computer system meet the minimum requirements of Windows 7. Remember that Windows 7 OS has a higher system requirements compared to Vista or XP.