csv import cronjob with image from virtuemart to virtuemart

Hello, this is my situation: I have one site in joomla 2.5 + virtuemart 2.0.2 and I have to charge a csv file from a dropshipping site every night at 00.00. the csv are exported from joomla 1.5 e virtuemart 1.x and I have to do this: 1) charge the csv updated every night at 00.05 (the csv come from [login to view URL]) 2) auto-charge the image and thumbnail image from [login to view URL] server to my website addictional info: I have already setup my website. Joomla 2.5, virtuemart 2.0.4 and csvi are installed and work fine.