Windows Virtual PC requires processor capable of hardware virtualization, with AMD-V™, Intel® VT or VIA® VT turned on in the BIOS to run XP Mode in Windows 7.However , VMLite a virtualization technology based on VirtualBox , can run XP Mode in Windows even if your processor is not capable of Hardware Virtualization.

You can integrate Drivers directly into your Windows XP installation disc using DriverPacks so that all the required Drivers are installed automatically whenever you install Windows XP.You can also integrate all the SATA/MassStorage Drivers.So all AHCI or SATA Hard Disks are detected automatically and you do not have to press F6 and load your SATA Drivers from a floppy during installation.

Since there are many versions of .Net Framework available ,it is very difficult to download and install each of them seperately.For maximum compatibility you must install all the .Net Frameworks from version 2.0 and above.The all in one installer released by Microsoft is 231 mb.However you can download an alternative AIO installer(for XP) of size 34mb.