Test Multisite Sites Not Created When New Site Created In Admin Area

Hi there,

Please bear with me I am new to multisite creation,
I am in the process of creating a multi site blog platform, during the course of this process I am trying to create a new blog, initially for test purposes.
I have created new site in network admin area, but I cannot visit either dashboard or site, so I assume my network is somehow set up incorrectly by myself,
Any help would be gratefully appreciated, regards Andrew

for the record, the site I am trying to create can be found at http://www.ecoblogsites.org

Thanks again