Local Area Connection 2 keep on disappering

[deltaforce021]

Hello i have a sony viao vgnsz32gp/b
An my internet area connection 2 keeps on disappering an reappering like a week later an its reli annoying me

an i cannot access the internet on the laptop
ive done everyfing 2 the laptop reinstall xp/drivers/the lot
its a service pack 3 btw
these are the specifications for the laptop

go 2 this website:

http://vaio-online.sony.com/prod_inf...fications.html

the driver 4 this laptop of mine is a

Marvell Yukon 88E8038 PCI-E Fast Ethernet Controller Driver

please help me 2 gain acess back 2 the internet thru my laptop other than using sumbody elses pc

an i need it 2 lan 2 my friends pc it work before 4 a few hours then disapper 4 about 6 days an nw its back, then it just went away after 2 daes after restarting my laptop

it is reli annoying me

plez help ive done everyfng (i think ) but nt destory it lol

thank u

ps. its nufin 2do with the cables/modem/router/hub as well i thnk its sumkind of hardware setting mayb not 2 sure but i hav dne everyfng i thnk if u hav any ideas plez tell me thanx an i c if i hav done those thngs that mite fix this situation but was unsuccessful

thanx again