Hi there, was folowing your tutorial step by step but still having an issue!.. would you mind giving me some advice..

I keep hitting a brick wall with the error below.... 
Your PHP installation appears to be missing the MySQL extension which is required by WordPress.

I have tried IIS6 then Apache then IIS7

any ideas where I go with this , have followed your advice exactly line for line but to no avail.. any ideas on what to check?. Thanks in advance. 

Cathal in Dublin