I have a Linksys wireless card (wmp11). For a while I was using the driverloader wrapper until it expired, now I'm using ndiswrapper. I have it installed and the wireless card is working, but I can only access things inside of my network. I had the same problem when I was using driverloader (the first day it worked, but after that same thing) so I'm pretty sure its not the ndiswrapper.
Here are some ping results (I know it's usless but it'll help show my problem):
[root@localhost root]# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=150 time=2.80 ms
[root@localhost root]# ping www.yahoo.com
ping: unknown host www.yahoo.com