After going about the installation in the correct way and spending 3 days going through it, I have managed to migrate 90% of the content from my old Joomla 1.5.23 site. There are a few bugs but they are caused by conflicts with other components that are coded wrongly for Joomla 1.7.
I now understand why the decision was made by the Gavick team to support Joomla 1.7. After importing my content, I was able to plugin everything with one click, using the gavick components and modules.
There are a few formatting/style bugs, but are minor at the moment.
As with everything there are always bugs. But after testing this template. I will subscribe for another year after my subscription expires.
Thanks Gavick Team.