This is the right place to post. What I will need is for you to view source on the worldpay success page and the cut and paste it to me at my email address. Please don't post it to the forum as it could contain information about your business banking details. What I need it for, is to see if the "new" rbsworldpay is applying any filtering that may be affecting your stylesheets so I'll need to compare the output with output rendered from a test machine, or you could just PM with the site details (admin access may be required) and I can run my own tests, anyway it will have to be tomrorrow as it is almost 2am in the UK.

Thanks Philip.