GUIminer Problems

[kurtisab]

Hey guys, brand new to mining bitcoins.

i am having trouble connecting to generate coins, i got a picture, just to make sure i am doing it right

http://img827.imageshack.us/img827/3103/capturelaz.png

Am i meant to put in a username or pass, or use default?

Am i meant to click generate coins on the actual bitcoin client?

And finally, would i be better for me to join a pool, or solo, with just a 5770.

Thanks.