Below are the main points:
* The promotional period is from 29th October 2008 until 30th November 2008.
* Subject to the remainder of these terms and conditions customers can claim £100 cash back on any qualifying HP Pavilion PC when purchased for a price of £600inc VAT or above. In order to qualify, the valid PC needs to be purchased between 29th October 2008 and 30th November 2008. Customers may claim cash back for a maximum of 2 qualifying HP Pavilion PCs during the period of the promotion. The qualifying HP Pavilion PCs are listed below and in the Terms and Conditions PDF linked above.
* Customers have 14 days to submit and enter their cash back claim from the time of purchase. Any claims submitted after the 14 day time period will be denied. The date on the receipt marks the date of purchase.
* HP employees, resellers or retailers are not permitted to make a claim on behalf of an eligible end user.
For further information please see http://www.hp.com/uk/great-return/
where you can also download the form to claim back your £100.