Hi, I would like to start mining litecoins, i am using GUIMiner-scrypt alpha and my graphic card is ASUS EAH5450 SILENT.
Now the trouble is not to set it up but which should I choose in GPU Defaults?
Here is an imge: http://www.imagehosting.cz/images/helpama.png

I am really quite confused about setting this up. Host, Port, Username & Pass are easy ones but what is stratum for example? I guess except for these two rest of the settings just adjust how much can my GUIMiner burden my PC. Thanks for help in advance & Marry Christmas.