Hi,
Perhaps what is required is to install the drivers separately and use those from the manufacturer, Toshiba. Incidentally, there are 18 versions of a Satellite A65, which one is yours pls? (Versions start from S1062...S1762).
Pls start
here and select Portables, Satellite, and A65 + Version, then click on "Show Results" button.
Alternately, you may want to jumpstart and try
this for the RTL8139 and/or
this for the Atheros WiFi. Both are for Windows XP.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.