Miura

I'm going to start offering hosted virtual servers so I am looking for a php or html script that can calculate a price based on the following criterias :

- type of OS (8 different options)
- amount of hard drive space: unlimited options by 50GB increments, fixed price per increment.
- number of CPU cores (up to 12), fixed price per core
- other options such as SQL selection or CRM or any other application

Now the complication comes where Microsoft operating systems and Linux operating systems have a different price scheme. So basically, the script has to allow the User to select any OS and combine it with any amount of hard disk space and CPU cores, then fork out the total fee. The fixed price per hard disk space increment and CPU core increment is lower when a Linux OS is selected and higher when a MS OS is chosen (because of the price difference of the licence).
This can be done with sliders for selection or dropdown or just put a value in a field and hit Calculate!

Anybody can write this script for me? I'm willing to pay of course.
Thanks for your help guys.

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Alex