Here is an image of GUIMiner
1. This area you will choose the server you will be mining for and as for the previous time, we will use Slush's Pool.
2. Here goes the username, and from last time I said to write it down, but if you didnt you can get a copy of the username and password at Profile.
3. Here you select which GPU/CPU you will want to use.
4. Here goes the password provided by mining.bitcoin.cz
5. Here you put flags, they will make your system give the best performance which will generate more bitcoins! You can find a list of flags here.
6. Here you choose how many cpu cores you want to run for the miner. Choosing less will make your computer generate less lag.
7. Once you have filled everything in click start mining! and refresh the slush's pool homepage and you will start earning! :)