Hi, it seems to be impossible and this is why. A bookmark is a pointer on a dedicated page behind an URL. When you access this web page, it's an HTML content served by a server. In your case, if you have an HTML file on computer A, then you can open it from computer A because it is the "server". Now, from a computer B, you cannot access this same file because it's on computer A and computer A did not open access to disk and other resources (as a web server). The only way to do is to serve your HTML file on a server with an URL (or configure computer A as a server)

Hope this help.