I am having a similar problem but slightly different as well.

1. I click on Tunebite and it says Welcome to configuration wizard. It tells me to hit Next so i do.
2. I type in my serial number and it says thank you for registering. I hit Next.
3. The third screen is Sound Card Selection. It shows that red green and yellow box. I cannot pull down any of the tabs. All the tabs are gray and I cannot click anything on the screen besides Back Next or Cancel. In the box under the colored box it reads: No sound card has been detected. You need to install a sound card to be able to use the automatic background mode! Since i cannot do anything i click next.
4. The next screen is High-speed digital dubbing. Nothing shows up except a little box at the bottom that says "High speed digital dubbing is not available." Now my only option is to hit Back. I cannot go any further.

Could anyone please help me with this. I have been stuck on this for about a week now and do not know what to do. I am a huge noob when it comes to this kinda stuff. TIA.