Hi ItchyZ,
Welcome to Sony Community!
The model of the wireless adapter of your Vaio is Marvell® Atheros® AR9285. You can actually download and install the driver for your wireless adapter here:
To download and install the originally shipped version, please click here: http://esupport.sony.com/US/p/swu-download.pl?mdl=VGNNW242F&upd_id=4862&os_group_id=6
Here's an updated version: http://esupport.sony.com/US/p/swu-download.pl?mdl=VGNNW242F&upd_id=5251&os_group_id=6
Hope these help.
Regards,
Vincent
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