Shopping Cart Intergration Revised

I need assistance with adding a part search onto my client's web site [login to view URL] with a manufacturer's ([login to view URL]) web site interface (see attached code) and receive the search result so that the part could be added to a shopping cart on my site. This site [login to view URL] is doing mostly the same thing we need done. I have not secured shopping cart software yet and I'm open to suggestions and need that included in your pricing. My client is planing on hosting the site on one of godaddy's dedicated servers. This project was posted a few months ago however my client place the project on hold however we are now ready to move on the project.