Please use FTP to upload your files to our server. We will be happy to send FTP login details on request. If you are new to FTP we thoroughly reccommend programs like Transmit and Fetch. Both have free demo periods and are worth the money when you buy them.
If you can't manage FTP currently the size limit on sending files by email is 10mb. As this is far too low a limit for most print files you'll have to use a web based service to send large files.
We are currently testing a file uploader as a beta which will go live as soon as we are confident it works as expected. Please mail us for the page address.
Any doubts or questions please email or call.