The Vaio has the normal Windows key next to CTRL and ALT but it doesn't work with the normal functions of that key.
In addition, the Vaio has an Fn key (for Function)which does a number of things with the function keys, including mute, volume control, battery functions, and most importantly to me, switch display to an external monitor or projector.
The XP installation set the keyboard up as a Standard Windows keyboard. If I could find some way to set it up as an Extended Windows keyboard that might help, but no drivers for this seem to be on the XP upgrade disk.
Thanks - Now I understand but I`m away from my Vaio Laptop until tomorrow afternoon. Your real "need" is to switch display to an external monitor. The extended keyboard only provides shortcuts. e.g. Increases volume, mute etc. All of which you should be able to do from Control Panel albeit in a more long winded fashion. Try right clicking your desktop and properties then the display tab OR Control Panel Display. If the switching isn`t there you haven`t downloaded all the computer drivers.
Back to Everest Home and the Sony Site. XP has loaded "default" or generic drivers automatically to enable the laptop to work. Called Plug and Play I think. Somewhere the correct drivers can be found so go to System Properties and check out the individual drivers for the Motherboard first, then the on board graphics - if the drivers for these aren`t Intel/Sony search to find other drivers that are.
Before you start make a restore point just in case. I`ll try and follow up tomorrow.