I'm off to bed mate, but i will check back tomorrow to see if anyone else managed to help or if i have thought of anything else to try, just one final thought before i do go tho... Normally you would type into a browser:
http://192.168.1.1 to get the login screen. Are you typing this, did you change the IPs about or did the firmware state that it would do anything like change the default IP? Just a suggestion as to why the login might not be coming up.
Laters.