I doubt the drivers on the CD are up to date.
I found some recent Windows 7 drivers for your adaptor in the link below, "slow to open this site". GN-WB32L (1.0) - GIGABYTE - Layanan - Communication - Driver
"this site is very slow to open".
It's best to set up your routers wireless configuration manually, set your own SSID and password, use WPA2 security with AES encryption. Use the same settings using the manual Win 7 wireless set up.