1ShoppingCart have a domain masking feature which allows me to use links on my domain instead of theirs for the shopping cart. It requires a cmd.php file at root level, which I've uploaded.
However, whenever I try to go to a link involving cmd.php, instead of being redirected to the appropriate page, I just get my own WP custom 404 page.
I'm guessing that the problem is to do with permalinks - that WP is looking for a WP page by the name of cmd.php etc, and as there isn't one, it's giving me a 404 instead.
Does anyone have any idea how I can get round this problem? Is there any way to tell WP to check for real paths as well as permalinks?