No worries, we are here to sort things out.
Thanks for the info., it does help a lot. Make sure that the Windows Vista laptop has the latest Service Pack which is SP2
then let's update the Atheros Wi-Fi driver, you'll have to manually download the zipped file from this site
. After you have downloaded you will have to unzip the file then follow this Tutorial
on how to manually update the driver.
Test the wireless connection after and post an update.