Ordering a new Windows VPS should be done through our WHMCS provisioning system.
Go to http://www.professionalxen.com/ and request the VPS of your choice.
From time to time, we might launch new offerings in response to user demands. Keep in touch through our forums and networking social activites, where we may offer coupons and discounts on Windows VPS.
The process is very intuitive. You will need to have ready a valid paypal account for the first payment and for monthly recurring payments.
We'll be glad to help you in the process of getting your new VPS. We're available at the Professional Xen forum, and as last resort you can always submit a ticket to our support personnel.