We will see after why the port 80 is blocked, in your PC.
First, we need to set the default document, in IIS.
Right-click on Start > Properties
Click on 'Customize' button
Click on 'Advanced' tab
Scroll all the way down, you will see 'System Administrative Tools' there
Put a dot into 'Display on the All Programs menu' option (first one)
Click on OK 2 times, you are done with this step.
Now, click on Start > All Programs > Administrative Tools > Internet Information Services
The IIS console will start.
Click the [+] in front of your 'local computer'
Right-click on 'Web Sites' > Properties
Click on 'Documents' tab > Click on 'Add' button > Type: index.php > OK > OK
We need to set the PHP variables, so they are detected by the system.
Click on Start > Right-click on My Computer > Properties
Click on 'Advanced' tab > Click on 'Environment Variables' button
You should see now this window:
Click on 'New' button (above OK)
Variable Name: PHPRC
Variable Value: %SystemDrive%\inetpub\php
Click on OK
You should be now back to the list of environment variables.
Find the 'Path' variable and double-click on it (highlighted in screenshot)
At the end of the list, add:
;%SystemDrive%\inetpub\php;%SystemDrive%\inetpub\m ysql\bin
Click on OK, 3 times.
Open your windows explorer and look into disk C:, you should see there a new folder called:
C:\inetpub
Create inside 2 new foldders:
-- \inetpub
---- \
mysql
---- \
php
...
---- \wwwroot
(ya, they are lowercase)
Let me know when you are done with those steps.