Thanks for the help here.
My Gigabyte GN-WP01GS stopped working after upgrade from Vista 64 to Windows7 64.
From another PC I went into Gigabytes website, this one:http://www.gigabyte.us/products/product-page.aspx?pid=970&dl=1#driver
downloaded the latest driver for Vista 64 onto a USB-stick. Unpacked the file on the USB-stick. Installed on my Win7(64) PC. Accepted update. The network icon now indicated networks available. Selected my network. Now i works!