Instalation Problem

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Hi all

I have followed the instructions given here:

http://www.concrete5.org/documentation/installation/hosts/1and1_com...

When I get to step 26 and try to visit the page I get the following error:
Server Error in Application "68972619-NRGROADSHOW.COM"
and a
HTTP Error 404.0 - Not Found

The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Can somebody help me please?

Thanks
Nick