Ok John this is how it works. Your wife registers with visa4uk she creates the password. Visa4uk will then send her the GWF number by email. She can then put in her details. She gives you the password and you can put your details in. Visa4uk has the facility to go back and check your answers before you submit them. If you dont have the information to hand you can save. When you feel everything is ok you pay for the visa. they will send a email confirming this. Then your wife can book her VFS appointment. Hope this helps.