|I suspect your wireless is G and therefore should be 54 Mbps, not 10 (that's the old B standard).|
I can never really get all computers to work together properly.
By this you mean what? All wired computers work but wireless won't? Wireless connected computers work and wired won't? Or some combination of the two?
Connect all computers. Open a command prompt window on all of them (Start >> Run >> type cmd and hit "Enter"). Run the following command on each:
Now, compare the output of all computers. Pay attention to the ones that aren't working in comparison to the ones that are. What's different?
The only IP setting that should differ is the actual IP address. The rest, subnet mask, default gateway, dns etc, should all be the same.
If this doesn't help you figure out what's wrong, post the output of the ipconfig command for one working computer and all the ones that aren't starting with the working computer first (label each) so we can have a look.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.