A way to workout the problem is to add some entries to your hosts file:
Add...
62.213.86.8 forum.tatysite.net
62.213.86.17 eng.tatysite.net
62.213.86.17 tatysite.net
62.213.86.17
www.tatysite.net
to (use notepad or another text-editor)...
Windows 9x: C:\Windows\hosts [1]
Windows XP: C:\Windows\System32\Drivers\etc\hosts
Windows 2000: C:\WinNT\System32\Drivers\etc\hosts
Linux/Unix: /etc/hosts
[1] Your Windows 9x may not have a hosts file, so just add it.
... and you'd be able to connect to the forum and the rest of tatysite all the time