|I currently have an XP and Windows 7 laptops running wirelessly and an XP desktop running wired on the same network. Only the Vista laptop acnnot connect.|
Then the issue is the vista laptop and not the router's config. First, open Device Manager and check and ensure there's no exclamation mark beside the NIC. If there is, then you have a hardware issue with the NIC.
If there is no checkmark beside the NIC, then you'll next want to check for updated drivers for the laptop's network interface. If there are newer ones, apply them.
If that doesn't fix the issue, or there are no newer drivers, try uninstalling, then reinstalling the TCP/IP stack.
If that doesn't fix the issue, you could try removing the device in Device Manager and then reboot. Let windows "find" the device again and see if that doesn't work. If it doesn't, then you'll either have to reinstall windows, or replace the NIC. If it's an onboard (built-in) NIC, disable it in the BIOS and then plug a PCMCIA NIC into a free slot and set it up.
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.