DNS problem – cant manage our own mail or website

Hi everybody !!
I need some HELP !!
The problem is that I can’t check my own mailbox and I can’t see our own webpage (www.svemont.se), I get DNS trouble..
Everything elese works just fine (xp-login, forwarding to my ISP a.s.o.)
I have a webpage where I have explaned the problem, showing screendump-pictures a.s.o.
Please use this link, and help me to solve the problem.

The link is: http://www.viqtum.se/support_DNS.htm

Thank’s for your help !!

/Arne