>>Go with 128 bit encryption security as opposed to 64 bit or 40 bit. It is not perfect but it is better than nothing

Actually, 128 bit WEP encryption is exactly as secure (from an attacker's viewpoint) as 40 bit, as a brute force attack is actually unnecessary to get access. If RC4 was a good algorithm then this wouldn't be the case, but the current attacks against WEP all go for the weak keys.

Current recommended practice from a few reputable security specialists is to disable WEP altogether (as it leaks information) and use IPSec (preferred) or one of the vendor specific solutions (PEAP, EAP, LEAP, Kerberos etc) along with MAC filtering and a firewall.

Of course it all depends on the security classification of your data, and how concerned you are with letting attackers onto your network.