If your LAN is all on 192.168.1.x, then you should be able to use this in mysql to add an account that would work from anywhere on your LAN:
Code:
GRANT ALL PRIVILEGES ON *.* TO 'eqemu'@'192.168.1.%' IDENTIFIED BY 'my-new-password';
Of course, you need to replace "my-new-password" with whatever password you want for it.