Help!! DNS Error

Hi, I hope someone here can help me. There is a website that I was able to go to on my home computer and laptop. Now when I try to go to this website its giving "page can not be displayed .. DNS error" Now I can get to this website from my work computer with no problem. I have contacted the website to see if my IP has been banned they assure me they have not. I have tried diffrent browsers it does not work, i have reformatted nada, I have tried diffrent DNS servers from my ISP nothing. I can ping the address by IP and Name. I can go to all other websites its just this one ( the one I want to go to ... ) that I am having problems with.

Any suggestions or advice would be greatly appreciated.

Thanks,
Whisper