From the small research I did, that computer model is for the UK onry... Went to their support website and they don't offer drivers for windows xp, only vista >_>
http://support.vaio.sony.co.uk/downl...GB_cons&m=2529
Ironically the L1 model does have windows xp lol... Seems like you won't be able to install xp. However, I must mention that even though my laptop does have xp support, Service Pack 3 (windows xp patch) came with ALL the drivers for my laptop. I don't know if I'd recommend you trying it because you lack the knowledge and I don't want you breaking your PC lol. Your choice ;o