This is a step by step walk through. As usual I take no responsibility for your computer, if something happens.

Step 1: Load the cd onto your computer.
Step 2: Click enter on start and install mythbuntu.
Step 3: Click the install icon.
Step 4: Click forward.
Step 5: Click on your language and click forward
Step 6: Click the closest city in your time zone click forward.
Step 7: Click on your keyboard layout click forward.
Step 8: Click guided partitioning. click forward.
Step 9: Type in your credential click forward.
Step 10: I will choose standard installation, since I have no mythTV boxes. click forward.
Step 11: I do not have a remote so i will click forward.
Step 12: Now if you have a video driver go and click what you need then click forward.
Step 13: if all settings are right click install.
Step 14: your done.