I've managed to get wireless to work. I've tried another WEP key on the
wireless router and used 5 ascii chars so that it will generate a 64
bit wep key.

I update this 64bit key in /etc/rc.d/rc.inet1.conf

then i restart the network interface again.

Viola. It works.

Another way is to use 13 ascii chars to generate 128bit key.

Thanks everyone =)
Sillly me for not getting my techincal facts right in the first place