Have downloaded apache 2 in ubuntu 10.10 through terminal screen and also php5 but when I type the server address in the browser, it asks for a username and password .I tried giving the login username and password( the one with which I created my ubuntu login) but that wont help:(
Have attached the screen shot too.please help
That's looks like the IP address for your router, not the apache server.
The username and password you're being asked for in the image is the one for your router.
Try 127.0.0.1 (localhost) in your browser instead!