He has asked me can I get online which I can, he cannot. It is still telling him it is down for maintanence.

:As announced a few hours ago, we're taking the site offline to move it to the hardware it was on earlier this week so that our hosting company can upgrade the new servers. We should be back in 30-45 mins, maybe less.

Can anyone tell me how he can fix it?

Cheers, Benni.