We've just applied for a merchant account with PayPal and we need to install PayPal Website Payments Pro contribution to our OSCommerce store.
Our pages are already heavily modified so you will have to compare the files - i.e. you can't just replace the files with the ones from the contribution.
Also a couple of small header changes. Nice quick project for someone that knows what they're doing. MSN preferred and would like it done ASAP.