Computer power needed

I need to rent computer power for short term work. The computers will be set up with a spider scraping company info from a site similar to yellow pages. The site will detect this so you must be able to change proxy/VPN when this happens. Requirements: 6-8 systems (this can be divided on more than one bid, please state in your bid how many systems you can provide) Minimum dual core processor 2GHz Minimum 2GB RAM Windows XP Pro SP2 .net framework 2.0 Internet Explorer 7 Anonymous connection and possibility to change connection when detected and banned from the site. The spider is processor and RAM heavy and might require all your computer resources. Duration would be 1-3 days per computer - depending on system speed, connection and efficiency. You will be given batch files to feed the spider with, and the task also requires you to check that the right amount of hits are scraped (open the output file in Excel or other program with numbered rows and check that the number of rows correlates with the number of hits when same search is made in browser). Payment can be made through Moneybookers/GAF or Paypal BUT I need a proper invoice in order to fulfill payment.