Install Wordpress and update the URL Path using the artcile - http://helpcenter.infoquest.com/knowledgebase/articles/606702-changing-the-wordpress-url-path - now you can update the IP address.
Within the customer control panel via https://cp.infoquest.com > Click the More Services Tab > Click Databases > Click the database name > Click the link to Browse Database Manager. This will launch phpmyadmin.
Once within phpmyadmin, on the left click the database name > Click wp_options. You will need to change 2 fields, siteurl & home, from the domain name to the new exclusive IP address. Click the pencil icon "Edit" to change the fields. Example:
old siteurl: http://domainname.com
old home: http://domainname.com
new siteurl: http://65.61.x.x
new home: http://65.61.x.x
You can find your exclusive IP address within the customer control panel via https://cp.infoquest.com > Hosted Domains > Click the domain name in question > Click the Web Tab > Click Edit > Change the IP address Type from shared to exclusive.