[BNM] server fail-over solution help

[Gavin Wye]

Hi guys

Pipex decided to shut down my server last night for some scheduled  
admin which they only told me about at lunchtime yesterday. This  
means that my server was down all night they are apparently going to  
do the same tonight and for the rest of the week.

So I need a way to switch from my primary server to a back up server   
both of these have different IP addresses I have thought of using the  
DNS to have ns1 & ns2 point to my primary server and ns3 & ns4 point  
to the secondary server but I don't have my own name servers and need  
a solution that I can have set up in the next couple of hours which  
counts out any DNS changes.

any ideas?

Gavin Wye