Don't bother. The *ONLY* difference is that Silver supports 64-bit WEP, and Gold supports both 64-bit and 128-bit WEP.
Both versions of WEP are so ridiculously insecure that there is no reason to choose 128-bit over 64-bit. Using an AirCrack type app, 128-bit WEP can be hacked in less than 10 minutes on a reasonably modern computer.
If you just want to prevent the average Joe from connecting, 64-bit WEP is fine. If you want real security, you need to use WPA2 (which is incompatible with 802.11b-only hardware.) Yes, even WPA-PSK has been cracked, although it takes noticeably longer than WEP.
Both versions of WEP are so ridiculously insecure that there is no reason to choose 128-bit over 64-bit. Using an AirCrack type app, 128-bit WEP can be hacked in less than 10 minutes on a reasonably modern computer.
If you just want to prevent the average Joe from connecting, 64-bit WEP is fine. If you want real security, you need to use WPA2 (which is incompatible with 802.11b-only hardware.) Yes, even WPA-PSK has been cracked, although it takes noticeably longer than WEP.