would anyone be able to make any suggestions please?

[kazza12345]

I go onto a pro-boards chat type site, and when i was using it last week, it suddenly booted me off, saying page not available. Since then i have not been able to get back on it. I have been in touch with the moderators who have not banned me, i can reach the site through other computers, i have not changed any settings at all (just to make sure i did a system recovery back to last month) i have no viruses detected by norton. When i try to get there it comes up Dns or server error. can anyone give me advice about what i can try to get to this site as i have a lot of "friends" there that i'm missing. If anyone has any ideas, please have a heart and tell me ... imagine if you couldn't get to this website ... :'(