Hereby I present to you the free Server Density provisioning module (http://www.serverdensity.com/)!
WHMCS users that are interested in reseller pricing can contact them by sending an email to hello@boxedice.com (for special pricing mention you use WHMCS)
A few screenshots:
Module Settings
Fill out your Server Density 'username', 'password' and 'account' (the part before '.serverdensity.com')
Custom Fields
You need to create 2 custum fields in this exact order:
1. Server name - Text box
2. Server IP - Text box (Validation: /^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ )
Download the module:
serverdensity.php.zip
Hope you enjoy it!
Geert