Hi, I have been having problems with my site for weeks, one which is now resolved was the 500 Internal Srver Error on every page of my osCommerce based site, however since this has been fixed I have been alerted with another problem. I have asked about this on the osCommerce forum and I have left the topic open for a week and it has only had one reply which was 'ask your host', PayPal just told me to ask on osCommerce, so I am stuck... Basically everything is fine, but when a cusomter clicks on confirm order in the checkout process to be directed to PayPal to pay, instead of it directing to my custom checkout pages on PayPal, it just directs to the PayPal home page. I have no idea what the problem could be, maybe one of the files in my directory eg. checkout_(something).php has a problem, but I haven't changed any of them? I did change my PayPal password a while back but I am not sure if this could have done it? Does it sound like a PayPal problem? Because to be honest I don't think it is a host problem but I am just double checking as it is what I have been told to do. Thanks for your time and any help.