How to change host file: Step 1: Go to the host file location “C:\Windows\System32\drivers\etc” Copy ‘hosts’ file and ‘Paste’ it to your desktop. Step 1 Step 2: From your desktop open ‘hosts’ file with notepad. Step 2.1 Step 2.2 Step 3: After extracting ‘Camtasia Studio 8.0.1 + Serial.rar’ you will get a txt file named by ‘Serial’. Open ‘Serial’ in notepad. Copy the text & paste at the end of ‘hosts’ file[opened in notepad earlier in step 2] Step 3.1 Step 3.2 Step 4: Save the ‘hosts’ file and Exit. Step 4 Final Step 5: Now copy the ‘hosts’ file from desktop. Then paste ‘hosts’ file to this location ‘C:\Windows\System32\drivers\etc’ & Select “Copy and Replace” Final Step