© Mark Cassanto & Associates.  Friendly and Professional Service Since 2003. Custom-Built. More Details - click here! Brand Name. More Details and Choices - click here! Mark Cassanto & Associates Made with Xara CUSTOM-BUILT COMPUTER TOWER Is 100% custom-made with no proprietary parts using only standard parts that can be easily found and interchanged to match ... Read More ... NAME BRAND DESKTOPS Since the earliest IBM PC computers, consumers have had the option of putting together their own computer system from compatible components or buying from a manufacturer. Most computer systems come pre-built with the specifications and components already selected ... Read More ...