multi store platform based on 3dcart

MAIN PURPOSE OF THIS PRODJECT IS TO ADD A PLATFORM OR MULTI STORES TO THE CURRENT 3DCART STORES WITH ON SINGLE CHECKOUT .. TO TO INTEGRATE YOUR MULTISTORE OR PLATFORM SOFTWARE INTO 3DCART. I am looking for a software that is able to handle multiple stores, more like a platform feel, with the same features as 3dcart.com.... or a multi store software that is able to be integrated into [login to view URL] with one checkout location for all stores.. the main category of each store is to be on top with dropdown window and when pressing the main category the subcategory is to be displayed in the sign bar... similiar to the category and subcategory display of thesource.ca. I should have to ablitty to creat a different feel for each store... and category... the final integration will be using 3dcart and paypal. I would like to be able to launch this store in May 2011. I would also like to display daily specials with limited amounts to be sold. INTERNET HTML 4, DHTML, WML, JavaScript and VBScript; Java Applets; CGI with Perl, C/C++, Java Servlets, REXX; MS ASP; Sun JSP; PHP; MS Site Server; VRML 2. 0; ActiveX; SSL; CyberCash. FOR programming requirements please go to : [login to view URL]